Park Co. is considering an investment that requires immediate payment of $20,957 and provides expected cash inflows of $6,900 annually for four years. Assume Park Co. requires a 9% return on its investments. 1-a. What is the internal rate of return? (PV of $1. EV of $1. PVA of $1, and EVA of $1) (Use appropriate factor(s) from the tables provided. Round your present value factor to 4 decimals.) 1-b. Based on its internal rate of return, should Park Co. make the investment? Complete this question by entering your answers in the tabs below. Required 1A Required 18 What is the internal rate of return?