Consider the following three mutually exclusive alternatives: Alternative A:

initial cost = 30000

annual benefit = 3000

salvage value = -

useful life(in years) = infinity

Alternative B:

initial cost = 50000

annual benefit = 6000

salvage value = 10000

useful life(in years) = 20

Alternative C:

initial cost = 60000

annual benefit = 9000

salvage value = 15000

useful life(in years) = 10

Assuming that alternatives B and C are replaced with identical units at the end of their useful lives, and a 10% interest rate, which alternative should be selected? Use an annual cash flow analysis in working this problem.