Context: ABC Ltd. is comparing two potential projects. Project 1 requires an initial investment of $60,000 and Project 2 requires $80,000. Their projected cash inflows are:

Year	Project 1	Project 2
1	$25,000	$30,000
2	$20,000	$25,000
3	$15,000	$35,000
4	$10,000	$40,000

Requirements: a. Calculate the NPV of each project using a discount rate of 15%. b. Compute the payback period for each project. c. Determine the discounted payback period for each project. d. Find the profitability index for both projects. e. Decide which project ABC Ltd. should undertake if they can only choose one.