Which of the following is not the function of the Authority under the Airports Authority of India Act?

To establish schools or institutions or centres for the training for children and its officers in regard to any matter connected with the purposes of educating them as per the AAI Act, Explanation: Section 12. Functions of the Authority: (3) Without prejudice to the generality of the provisions contained in sub-sections (1) and (2), the Authority may: (a) plan, develop, construct and maintain runways, taxiways, aprons and terminals and ancillary buildings at the airports and civil enclaves; (aa) establish airports, or assist in the establishment of private airports, by rendering such technical, financial or other assistance which the Central Government may consider necessary for such purpose; (b) plan, procure, instal and maintain navigational aids, communication equipment, beacons and ground aids at the airports and at such locations as may be considered necessary for safe navigation and operation of aircrafts; (c) provide air safety services and search and rescue, facilities in co-ordination with other agencies; (d) establish schools or institutions or centres for the training of its officers and employees in regard to any matter connected with the purposes of this Act; (e) construct residential buildings for its employees; (f) establish and maintain hotels, restaurants and restrooms at or near the airports; (g) establish warehouses and cargo complexes at the airports for the storage or processing of goods; (h) arrange for postal, money exchange, insurance and telephone facilities for the use of passengers and other persons at the airports and civil enclaves; (i) make appropriate arrangements for watch and ward at the airports and civil enclaves; (j) regulate and control the plying of vehicles, and the entry and exit of passengers and visitors, in the airports and civil enclaves with due regard to the security and protocol functions of the Government of India; (k) develop and provide consultancy, construction or management services, and undertake operations in India and abroad in relation to airports, air-navigation services, ground aids and safety services or any facilities thereat; (l) establish and manage heliports and airstrips; (m) provide such transport facility as are, in the opinion of the Authority, necessary to the passengers travelling by air; (n) form one or more companies under the Companies Act, 1956 or under any other law relating to companies to further the efficient discharge of the functions imposed on it by this Act; (o) take all such steps as may be necessary or convenient for, or may be incidental to, the exercise of any power or the discharge of any function conferred or imposed on it by this Act; (p) perform any other function considered necessary or desirable by the Central Government for ensuring the safe and efficient operation of aircraft to, from and across the air space of India; (q) establish training institutes and workshops; (r) any other activity at the airports and the civil enclaves in the best commercial interests of the Authority including cargo handling, setting up of joint ventures for the discharge of any function assigned to the Authority.