per month, and zero beginning and ending inventory, evaluate these two plans on an incremental cost basis: whole numbers$).$

$\backslash$begin$\{$tabular$\}\{$llcccc$\}$

$\backslash$hline & $\backslash$multicolumn$\{1\}\{$c$\}\{$ Month $\}$ & Demand & Production & $\backslash$begin$\{$tabular$\}\{$c$\}$

Ending $\backslash \backslash$

Inventory

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$c$\}$

Subcontract $\backslash \backslash$

$($Units$)$

$\backslash$end$\{$tabular$\}\backslash \backslash$

$\backslash$hline $1$ & July & $1300$ & $1,100$ & $0$ & $\backslash (\backslash$square $\backslash )\backslash \backslash$

$2$ & August & $1150$ & $1,100$ & $0$ & $\backslash (\backslash$square $\backslash )\backslash \backslash$

$3$ & September & $1100$ & $1,100$ & $0$ & $\backslash (\backslash$square $\backslash )\backslash \backslash$

$4$ & October & $1600$ & $1,100$ & $0$ & $\backslash (\backslash$square $\backslash )\backslash \backslash$

$5$ & November & $1900$ & $1,100$ & $0$ & $\backslash (\backslash$square $\backslash )\backslash \backslash$

$6$ & December & $1900$ & $1,100$ & $0$ & $\backslash (\backslash$square $\backslash )\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$