Her operations manager is considering a new plan, which begins in January with $200$ units of inventory on hand. Stockout cost of lost sales is $\backslash (\backslash$$ $60\backslash )$ per unit. Inventory holding cost is $\backslash (\backslash$$ $20\backslash )$ per unit per month. Ignore any idle$-$time costs. Evaluate the following plan. This exercise contains only Plan $\backslash ($ E $\backslash ).$ Plan E: Keep the current workforce, which is producing $1,600$ units per month, and subcontract to meet the rest of the demand. Subcontract cost is $\backslash (\backslash$$ $80\backslash )$ per unit.Her operations manager is considering a new plan, which begins in January with $200$ units of inventory on hand. Stockout cost of lost sales is $\backslash (\backslash$$ $60\backslash )$ per unit. Inventory holding cost is $\backslash (\backslash$$ $20\backslash )$ per unit per month. Ignore any idle$-$time costs. Evaluate the following plan. This exercise contains only Plan $\backslash ($ E $\backslash ).$ Plan E: Keep the current workforce, which is producing $1,600$ units per month, and subcontract to meet the rest of the demand. Subcontract cost is $\backslash (\backslash$$ $80\backslash )$ per unit.