evaluate the following plan on an incremental cost basis

Plan A: Produce at a steady rate $($equal to minimum requirements$)$ of $1,200$ units per month and subcontract additional

units at a $$70$ per unit premium cost. Subcontracting capacity is limited to $500$ units per month. $($Enter all responses as whole numbers$)$

$\backslash$table$[[$Month$,$Demand,Production,$\backslash$table$[[$Ending$],[$Inventory$]],\backslash$table$[[$Subcontract$],[($Units$)]],],[1,$July,$1200,1,200,0,$