ABC Ltd. is considering investing in a project that costs $100,000. The project will generate the following cash inflows:

• Year 1: $20,000
• Year 2: $30,000
• Year 3: $40,000
• Year 4: $50,000
• Year 5: $60,000

Requirements: a) Calculate the NPV if the discount rate is 10%. b) Calculate the IRR. c) Calculate the payback period. d) Should ABC Ltd. invest in the project based on NPV and IRR?