You rent a DVD of The Dark Knight Rises. The rental is for seven days and you watch the movie on the first day. You tell a friend about the film and your friend asks to come over and watch the movie with you before it is due back. What is your opportunity cost if you decide to watch the movie a second time instead of going to a football game?
A. the entire cost of the movie rental, since you have already watched the movie
B. one half the rental cost, because you have already watched the movie one time
C. zero, because you already paid for the rental.
D. the football game you forego by watching the movie again
Answer: D
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