Thornbrough Corporation Produces and Sells a Single Product with the Following

Thornbrough Corporation produces and sells a single product with the following characteristics:
The company is currently selling 7,000 units per month. Fixed expenses are $901,000 per month. Consider each of the following questions independently.
-This question is to be considered independently of all other questions relating to Thornbrough Corporation.Refer to the original data when answering this question. The marketing manager believes that a $28,000 increase in the monthly advertising budget would result in a 190 unit increase in monthly sales.What should be the overall effect on the company's monthly net operating income of this change?

A) decrease of $28,000
B) increase of $33,440
C) increase of $5,440
D) decrease of $5,440