Surrese that annual income from a rental property is expected to start at $100 per year for the 10-year expected life of the property. The income decreases at a uniform amount of $25 each year from at the end of year 4 to the end of year 7. The investment cost is $4,000. Assume that the lovestment occurs at time zero. (now) and that the annual income is first received at EOY one. And the market value is 56000 at the end of the entire period , a) What is internal rate of return (IRR) on this project? (90 pts) b) According to the result of patt (a) and value of MARR=5%, is this project profitable? Justify your answer (10 g)