Below is a snapshot of an Excel sheet Economic Service Life (ESL) analysis for two alternatives: Defender with remaining life of 3 years, and challenger with 6-year life. Based on the Excel analysis, answer the following questions: (Note: for numbers don't put units ($ or years)) NH ESL Analysis of Challenger Interest rate 10% First cost $50,000 3 No of years Market value AOC Total AW of costs 4 40,000 -5,000 -20,000 2 32,000 -7,000 -19,524 6 3 25,600 -9,000 -19,245 7 4 20,480 -11,000 -19,123 8 5 16,384 -13,000 -19,126 9 6 13,107 -15,000 -19,229 11 ESL Analysis of Defender 12 Interest rate 10% Market value $15,000 13 No of years Market value AOC Total AW of costs 14 1 12,000 -20,000 -24,500 15 2 9,600 -8,000 -18,357 16 3 7,680 - 12,000 -17,307 For a replacement study of unlimited period IN u 1- What is the ESL of the defender? hp 2- What is the AW of the defender's ESL? 3- What is the ESL of the challenger? 4. What is the AW of the challenger's ESL? 5- Based on the ESL analysis shown in Excel, put "Yes" or "No" in fro of the suggested recommendations below: a. Keep defender for two years then replace it. b. Keep defender for three years then replace it. c. Replace defender with challenger immediately. For a replacement study over a specified period 1- If the study period is one year, should we choose defender or challenger? 2- If the study period is two years should we choose defender challenger? (hp