Please answer A, B, and C. Thank you!

A&B Enterprises is trying to select the best investment from among four alternatives. Each alternative involves an initial outlay of $100,000. Their cash flows follow: A B C D Year 1 $10,000 $50,000 $25,000 $ 0 2 20,000 40,000 25,000 0 3 30,000 30,000 25,000 45,000 4 40,000 0 25,000 55,000 5 50,000 0 25,000 60,000 Evaluate and rank each alternative based on a) payback period, b) net present value (use a 10% discount rate), and c) internal rate of return