Here are the cash flows for two mutually exclusive projects: Project C1 C2 C3 -$20,000 $8,000 +$8,000 +$ 8,000 B 20,000 @ + 25,000 a. At what interest rates would you prefer project A to B? (For computation, consider all even discount rates from 2% to 20% range.) Interest rates above % b. What is the IRR of each project? (Round your answers to 2 decimal places.) Project A % Project B % IRR