5. Use Excels IRR function for this problem. Rancho Cucamonga has a 6% cost of capital. The firm has an investment opportunity that costs $2,000. Riverside expects the investment to generate annual cash inflows $600 for each of the next four years. The internal rate of return and Ranchos decision are a. 1.7% and invest in the project. b. 1.7% and dont invest in the project. c. 7.7% and invest in the project. d. 7.7% and dont invest in the project.