23. Assume that benefits from the two following alternatives are identical. Evaluate the alternatives and a) Compute the payback period if Alternative B is purchased rather than Alternative A. b) Use a MARR of 15% and benefit-cost ratio analysis to identify the alternative that should be selected. (10 pts): SHOW YOUR WORK! con Initial Cost Uniform annual cost Useful life (yrs) $500 $200 8 B $1,000 $100 8 003