Julie has three free hours on her Saturday afternoon and two things she wants to do. First, she wants to complete the math assignment that is due on Monday for school because she has no time to do it on Sunday. Secondly, she wants to go get coffee with her best friend, Carol. Julie decides to spend two hours completing her math assignment. If she decided to increase her current marginal benefit by one unit (one unit equals one hour), what would be the marginal cost of that decision?
A.
She would have no time to spend with Carol.
B.
She would be able to spend one hour with Carol.
C.
She would be able to spend two hours with Carol.
D.
She would be able to spend all three hours with Carol.