The Night Before a History Test, You Decide to Go

The night before a history test, you decide to go to the movies instead of reviewing your notes.You get 60 percent on your test compared with the 75 percent that you normally score.You a tradeoff and the opportunity cost of your evening at the movies was .

A) did not face; zero
B) faced; the 75 percent that you normally score
C) faced; the 15 percent fall in your grade
D) did not face; the 15 percent fall in your grade
E) faced; the mark of 60 percent on your test