A company has the cost structure shown in the table and faces a demand in July that exceeds capacity by $200$ units. They enter June with an inventory of $z$ best course of action in order to completely fill all of the orders for both June and July by the end of July is to:

$\backslash$table$[[,$ Managerial Lever,Cost$],[$Regular production,$$1,\frac{000}{?}$ unit$],[$Overtime production,$$1,\frac{300}{?}$ unit$],[$Subcontracting$,$$$1,\frac{200}{?}$ unit$],[$Inventory holding,$$\frac{100}{?}$ unit$/$month$],[$Backlog cost$,$$$\frac{400}{?}$ unit$/$month$]]$

A$.$ subcontract $200$ units in July and use $100\%$ of their regular capacity in both June and July.

B$.$ produce $200$ units using overtime in July and use $100\%$ of their regular capacity in both June and July.

C$.$ subcontract $100$ units in both June and July and use $100\%$ of their regular capacity in both June and July.

D$.$ subcontract $200$ units in June and use $100\%$ of their regular capacity in both June and July.