A Student Has a Chance to See Green Day in Concert.The

Multiple Choice

A student has a chance to see Green Day in concert.The student also has a major economics exam in the morning.If the student goes to the concert:

A) she may receive a lower grade on the economics exam.
B) the opportunity cost of the concert is the value of the time spent studying.
C) the decision involves a trade-off.
D) all of the above are correct.