When Using Differential Analysis to Determine When to Add or Drop

When using differential analysis to determine when to add or drop parts of operations,if the differential revenue from the sale of a product is less than the differential costs required to provide the product for sale,then

A) the product generates losses and the firm should discontinue its production.
B) the product generates losses and the firm should continue its production.
C) the product generates profits and the firm should discontinue its production.
D) the product generates profits and the firm should continue its production.