4. CDE Corporation is considering an investment that has the following cash flows: Now investment ($1,000,000) Year 1 cash inflow. 500,000 Year 2 cash inflow 300,000 Year 3 cash inflow 200,000 Year 4 cash inflow 200,000 Year 5 cash inflow 100,000 Required a) Calculate the following: i. The payback period ii. The return on the initial investment iii. The present value using an interest rate of 10% (b) Is the investment worthwhile? Why?