According to replacement analysis, determine the number of years that the defender should be used before replacement, Defender Challenger Year. TC EUAC TC EUAC * 1 9,000 9.000 9,000 9,000 2 8,000 8,519 5,500 7.317 Scenario 5 3 6,000 7,743 5 6,500 7,066 4 5,000 7,134 8,000 7.273 5 5,000 6,771 11,000 7908 Your answer c Uso defender: 5 years than replace with the challenger Uso defender: 4 years than replace with the challenger Use datender: 3 years than replace with the challenger Use defender: 2 years than replace with the challenger Use defender: 1 year than replace with the challenger Use defender: 0 year than replace with the challenger