The correct answer is A. 7 days.
The Companies Act, 2013, Section 62(1) states that “Where the minimum subscription is not received within the period specified in the prospectus, the company shall, within seven days of the expiry of that period, refund the application money received by it with interest at such rate as may be prescribed.”
Option B is incorrect because it is not the time period specified in the Companies Act, 2013.
Option C is incorrect because it is not the time period specified in the Companies Act, 2013.
Option D is incorrect because it is not the time period specified in the Companies Act, 2013.