Answer:
D. $9,200
Explanation:
The computation of the opportunity cost of going to summer school is shown below:
= Summer tuition and books + earning while working
= $2,200 + $7,000
= $9,200
In order to find out the opportunity cost, we added the summer tuition and books and the earning which come from working
While the other information given is immaterial in the question. Therefore, ignored it