First :[4] Four projects are under consideration by an Engineering company. All projects have a 10-year life and the company's MARR is 7%. Details about these projects as follows: The Net present worth (NPW) of project A is $3,429 The B/C ratio of project B is 0.98 The Aw of project C is $554 The Internal rate of return (IRR) of project D = 6.85%. Which project should be selected? Explain your answer? second: [4] For the following two alternatives, choose the best one using AW method. show calculations. Consider that the interest rate =10% A B -65,000 Capital cost, $ Annual cost, $/year Salvage value, $ -85,000 -4,000 -20,000 24,000 15,000 6. 3 Life, year