Under Section 22A of the Airports Authority of India Act, 1994, the "development fees" levied at airports other than major airports may be utilised for which of the following purposes?

Section 22A empowers the Authority, after previous approval of the Central Government, to levy and collect development fees from embarking passengers at airports other than "major airports" under the AERA Act, 2008. For major airports, the fee rate is determined by AERA itself under Section 13 of that Act. Collected fees are credited to the Authority and must be utilised, among other purposes, for funding or financing the upgradation, expansion or development of the very airport at which the fee is collected. The section also permits use of these funds for establishing a new airport in lieu of the existing one, or for equity investment in companies developing private airports in lieu of that airport.