Evaluate the cash flows for the following projects, assuming a WACC of 14%.

Cash Flow	Project A1	Project B1
Year 0	-$30,000	-$70,000
Year 1	$15,000	$20,000
Year 2	$25,000	$30,000
Year 3	$20,000	$25,000
Year 4	$15,000	$15,000
Year 5		$10,000

Requirements:

1. Calculate the NPV of each project.
2. Determine the payback period for each project.
3. Find the IRR for each project.
4. Compare the projects based on NPV and payback period.