Suppose the term structure of interest rates is shown below: 1 year 2 years 3 years 5 years 10 years 20 years Term Rate (EAR%) 5.00% 4.80% 4.60% 4.50% 4.25% 4.15% Consider an investment that pays $1,200 certain at the end of each of the next four years. If the investment costs $4,200 and has a net present value (NPV) of $88, then the four year risk-free interest rate is closest to: A. 3.57% B. 4.07% C. 5.07% D. 4.57%