Julia evaluated two independent projects using all the capital budgeting techniques mentioned in the book, and she concluded that both projects are acceptable. According to this information, which of the following statements is correct?

a. Each project has a discounted payback (DPB) that is greater than its useful life (n).

b. Both projects should be purchased.

c. Both projects have internal rates of return (IRRs) that are less than the firm's required rate of return (r).

d. One project has a positive net present value (NPV), whereas the other project has a negative NPV.