Three mutually exclusive alternatives are being considered: Initial cost Benefit at end of the first $500 $400 $300 200 200 200 year Uniform benefit at end of 100 125 100 subsequent years Useful life, in years 4 At the end of its useful life, an alternative is not replaced. If the MARR is 10%, which alternative should be selected (a) Based on the payback period? (b) Based on benefit-cost ratio analysis