When a multi$-$product plant operates at full capacity, quite often decisions must be made as to which products to emphasize. These decisions are frequently made with a short$-$run focus. In making such decisions, managers should select products with the:

A$.$ Highest sales price per unit.

B$.$ Highest individual unit contribution margin.

C$.$ Highest contribution margin per unit of the constraining resource.

D$.$ Lowest variable cost per unit.