please help with calculation

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:

Year	A	B	C	D
1	$20,000	$60,000	$35,000	$0
2	30,000	50,000	35,000	65,000
3	40,000	40,000	35,000	55,000
4	50,000	0	35,000	25,000
5	60,000	0	35,000	0

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.