tonight, you and your friends are planning to see captain america for which you have a $3 off coupon. without the coupon, the ticket is $10. once you are at the cinema, your friends now want to see black panther. both movies start and end at the same time. assume that you have nothing else to do. if you decide to see black panther with your friends, what is your opportunity cost? a. the value of seeing captain america $3 b. the value of seeing captain america $10 c. $10 d. $3