You have the following mutually exclusive projects and your firm's discount rate is 6%. Year O 1 Project A - $ 5,500 $1,250 $1,570 $1,650 $2,100 Project B - $ 10,750 $2,400 $2,950 $3,150 $3,775 2. 3 4 a. What is the payback period for each project? b. What is the discounted payback period for each project? c. What is the NPV of each project? d. At what interest rate will the 2 projects have the same NPV