Answer:
Mary can cancel the transaction at any time before midnight of the third business day thereafter.
Step-by-step explanation:
If she is having second thoughts about the deal , then Mary can cancel the transaction at any time before midnight of the third business day thereafter this is due to the fact that Mary may exercise the right to rescind or cancel the transaction until midnight on the third day after the transaction. She can cancel the deal at no cost to herself within 3 days of closing.