问题如下：
5. Is Böhm most likely correct regarding Comment A about the $10 million investment and Comment B about using the after-tax cost of debt?
选项：
A.No for both comments.
B.Yes for both comments.
C.No for Comment A and Yes for Comment B.
解释：
A is correct.
The $10 million original cost is a sunk cost and not relevant. The correct investment is today’s opportunity cost, the market value today. The correct discount rate is the project required rate of return.
哦哦，老师，所以答案是说那个10m 是book value ，所以不应该用，不是说不考虑他们是么？
答案的意思是说还是应该考虑土地和厂房，只是应该考虑他们的market value 作为opportunity cost是么？
