MARR is $10\%$ per year

$($a$)$ Complete the table of marginal costs of the old forklift for each of the remaining years of service.

$($b$)$ If the challenger has a minimum EUAC of $$4,539,$ answer the two additional questions

$\backslash$table$[[,$Forklift $($Defender$)],[$Year$,$MV at EOY,O&M Costs$],[1,$$$7,000,$$$2,000$