Braun Inc. has an investment opportunity that will yield cash flows of $35,000 per year in Years 1 through 4,$37,000 per year in Years 5 through 9, and $45,000 in Year 10. This investment will cost $225,000 today, and the firm's WACC is 13%. What is the payback period for this investment and what is the NPV? Should this project be accepted; why or why not