Suppose you are considering a challenger to replace an old asset. The initial market value of the challenger is 37,000 TL. MARR is 15%. The data related to the challenger is as follows: End of Year Market Value (TL) Annual Expense (TL) 1 32,000 4,000 2 28,000 5,000 3 24,000 3,000 4 22,000 12,000 a) (10 points) Compute the marginal cost for each year for the challenger. Show in a table. b) (20 points) Compute the EUAC for the challenger for all years. (Show your calculations.) What is the economic life of the challenger? Why