Problem 2. Problem 2. Based on your result from Problem 1 above to conduct a Retention and Replacement study with a specific period of 4 years. Assuming there is a suitable Challenger which will have a constant AW of -67,000 per year. Calculate the 4-year AW of different scenarios and choose the best scenario (lowest 4-year AW). Show the AW amount of the scenario you select and state the year when you replace the Defender during the 4-year period. (For example, if you keep the Defender for 1 year, you will replace it in Year 2 and your answer should be "Year 2). Both AW amount and year need to be correct to get full credit; no partial credit. Problem 2. Problem 2. Based on your result from Problem 1 above to conduct a Retention and Replacement study with a specific period of 4 years. Assuming there is a suitable Challenger which will have a constant AW of -67,000 per year. Calculate the 4-year AW of different scenarios and choose the best scenario (lowest 4-year AW). Show the AW amount of the scenario you select and state the year when you replace the Defender during the 4-year period. (For example, if you keep the Defender for 1 year, you will replace it in Year 2 and your answer should be "Year 2). Both AW amount and year need to be correct to get full credit; no partial credit