2) Three alternatives are being considered in the design of an industrial facility. The cash flow for the three cases is given below. Use an MARR of 15% and compare the alternatives using the Net Present Value (NPV) and Benefit to Cost Ratio (BCR) methods. Initial cost Yearly Cash Flow Salvage value Service Life Alternative 1 $ 28,000 + $5,500 $1,500 10 years Alternative2 $ 18,000 + $2,400 0 10 years Alternative 3 $ 24,000 +$4,800 $ 500 10 years