Consider Frank’s decision to go to college. If he goes to college, he will spend $21,000 on tuition, $1,800 on books, and $11,000 on room and board. If he does not go to college, he will earn $16,000 working in a store and spend $7,200 on room and board. What is Frank’s opportunity cost of going to college?
a. $33,800
b. $42,600
c. $49,800
d. $57,000