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4) Consider the information from problem 2 and calculate the payback period for each alternative and the discounted payback period for each alternative consider a MARR of 15%. Determine the best option for each method. A B D E Cost $20,000 $10,000 $12,500 $15,000 $22,500 Uniform annual benefit $6,800 $2,500 $4,200 $5,200 $6,800