A Firm That Must Raise All of the Funds Required

A firm that must raise all of the funds required for a project by borrowing at an interest rate of 12 percent has a marginal tax rate of 50 percent. Which of the following independent projects should the firm undertake?

A) A project with an internal rate of return of 19 percent
B) A project with an internal rate of return of 13 percent.
C) A project with an internal rate of return of 8 percent.
D) All of the above should be undertaken.