A mechanical engineer at Anode Metals is considering five equivalent projects, some of which have different life expectations. Salvage value is nil for all alternatives. Assuming that the company€™s MARR is 13% per year, determine which should be selected

(a) If they are independent,

(b) If they are mutually exclusive.

(c) Explain why your selection in part (b) is correct.

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First Net Annual Cost, $ Income, $/Year Life, Years A -20,000 +5,500 4 +2,000 B - 10,000 -15,000 3,800 D -60,000 +11,000 12 -80,000 +9,000 12