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.) is correct

	MARR=13%
	First Cost, $	Net Annual Income, $/Year	Life, Years
A	-20000	5500	4
B	-10000	2000	6
C	-15000	3800	6
D	-60000	11000	12
E	-80000	9000	12