3) Suppose you are considering a challenger to replace an old www.the ini muva the challenger is 37,000 TL MARR 15 15%. The data related to the change is End of Year Market value (T) Annual Expense (1) 1 32,000 AUX 2 28,000 3 24,000 3,000 4 22,000 12000 a) (10 points) Compute the marginal cost for each year for the challenger, show in a table b) (25 points) Compute the EUAC for the challenger for all years. (Show your calculations.) What is the economic life of the challenger? Why