(a) Lockheed Martin, the world's largest weapon and military vehicle manufacturer has just completed a feasibility study of what to do with the 16,000 tons of waste it produces every year. The company's CEO asked the board of directors, "Why pay another company to dig out our waste out of our own landfills and then pay another company to put our waste into another landfill? Why not simply burn the waste ourselves?" Thus, the company has decided to build a 10 million dollar incinerator to burn its waste as fuel, and thus saving $2.8 million per year in gasoline purchases. Engineers have estimated that after using the incinerator for four years, it can be sold to a local power company for $5 million. (i) Draw the cash-flow diagram. (ii) Check for multiple IRR. What is the IRR of this proposed project? (iii) If the company's MARR is 15% per year, what is your recommendation about the acceptance of this project? According to the estimation of the engineers, the salvage value of the plant is $5 million after four years. What is the lowest acceptable salvage value to ensure the acceptability of the project? (25