The four alternatives described below are being evaluated by the rate of return method.

(a) If the proposals are independent, which should be selected at a MARR of 16% per year?

(b) If the proposals are mutually exclusive, which one should be selected at a MARR of 9% per year?

(c) If the proposals are mutually exclusive, which one should be selected when the MARR is 12% per year?

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AI*%, When Compared with Alternative Initial B C Investment, $ Alternative 1*% A -40,000 A 29 -75,000 B 15 1 -100,000 16 20 D -200,000 14 10 13 12