Project A and Project B both require the same amount of capital investment, begin at the same time, have the same discount rate and generate the same amount of annual future cash inflows. However, project A's net present value is higher than one of project B's. Which of the followings is the reason for that? a. Project A generates more revenues sooner than project B does b. Project A's internal rate of return is higher than project B's c. Project A's payback period is shorter than project B's d. Project A's time lenght is longer than project B's