The information about two products produced by a company is shown below. Product X: selling price per unit $= 13$, variable cost per unit $= 11$. Product Y: selling price per unit $= 8$, variable cost per unit $= 4$. The company can sell at most $11000$ units of X and $9000$ units of Y. However, because of production limits, it cannot make more than $10000$ units of X and Y in total. Which production combination will maximise profits?
- AUnits of X: $10000$, Units of Y: $0$
- BUnits of X: $1000$, Units of Y: $9000$
- CUnits of X: $9000$, Units of Y: $1000$
- DUnits of X: $5000$, Units of Y: $5000$