Hadley has a coupon that she can use at the movie theater. It says, "Buy one ticket, get a second ticket half off." A movie ticket regularly costs $12. Which expression shows the regular price of two movie tickets, with the coupon?
A. 12+ (12x2)
B. 12 x (12+2)
C. 12+ (12 divided by 2)
D. 12- (12 divided by 2)