You go to a movie theater where movies generally cost $$9.$ You are intending to see a movie for which you have a $$3$ off coupon good for only that movie at that time. However, when you get there your friends ask if you would rather see a new release with them. Both movies start and end on the same time. if you decide to see the new release with your friends, what is your opportunity cost?

a$.$ the amount you value the first movie $+$$$3$

b$.$ the amount you value the first movie $+$$$9$

c$.$ $$3$

d$.$ $$9$