Which among the following option is a correct consideration for Buy Back of shares?

All shares for buy back should be fully paid up ·         The buy-back of the shares or other specified securities listed on any recognized stock exchange must be in accordance with the regulations made by SEBI ·         Every buy back must be completed within a period of 12 months (1 year) from the date of passing of special resolution or the Board of Directors resolution, as the case may be ·         No new buy back can be made within one year of closing of previous buy-back offer. ·         A company shall extinguish and physically destroy the securities so bought back within 7 days of completion of buy back. ·         Buy Back offer shall remain open for not less than 15 days and not more than 30 days