Amy Can Study for an Hour or Spend That Hour

Multiple Choice

Amy can study for an hour or spend that hour sleeping or going out for dinner.If she decides to study for the hour,the opportunity cost of the hour spent studying is

A) definitely going to sleep.
B) studying since this is the choice she opted for.
C) sleeping or going out for dinner, whichever she would have preferred the most.
D) sleeping and going out for dinner.
E) definitely going out to dinner because she must eat at some time.