A company is evaluating two potential investments with the following cash flows:

Year	Investment G ($)	Investment H ($)
0	-200,000	-250,000
1	80,000	100,000
2	90,000	110,000
3	100,000	120,000
4	110,000	130,000

The firm's required rate of return is 10%.

Requirements: a) Calculate the NPV for both investments. b) Determine the IRR for both investments. c) Discuss which investment is more desirable based on NPV and IRR. d) Explain any potential pitfalls of using IRR as the sole criterion for decision-making.