Problem: All of the following are correct regarding the medical expense deduction except: a. you can include only the medical and dental expenses you paid this year b. you can deduct medical expenses you prepay for the following year c. if you pay by check, the day you mail or deliver the check generally is the date of payment d. if you pay by credit card, the day the credit card is charged is the date of payment, and not when you actually pay the amount charged