Answer:
c. decrease by $10,000 per year.
Step-by-step explanation:
The contributing margin of a business is sales revenue less the variable cost to produce the product
Contributing margin refers to the profit that is free to be used by the business to pay fixed costs and reserve as net profit.
In this scenario if the department is discounted the fixed expense will reduce by $40,000
This implies that the net income will increase by $40,000 if the department is discontinued.
If the department is discontinued income from the department will reduce by $50,000. That is -$50,000
Net income= -50,000 + 40,000= -$10,000