Xia Co$.$ currently buys a component part for $$6$ per unit. Xia believes that making the part would require $$3\mathrm{.}25$ per unit of direct materials and $$1\mathrm{.}15$ per unit of direct labor. Xia allocates overhead using a predetermined overhead rate of $250\%$ of direct labor cost. Xia estimates an incremental overhead rate of $$0\mathrm{.}60$ per unit to make the part.

$1-$a$.$ What are the relevant costs for Xia to make or buy the part? $($Round your answers to $2$ decimal places.$)$

$\backslash$table$[[,$Per Unit$],[$Make$,],[$Buy$,],[,]]$

$1-$b$.$ Should Xia make or buy the part?

$$ Make

$$ Bu