Data concerning Massing Corporation's single product appear below:

	Per Unit				Percent of Sales
Selling price	$	230				100	%
Variable expenses		115				50	%
Contribution margin		115				50	%

The company is currently selling 9,000 units per month. Fixed expenses are $837,000 per month. The marketing manager believes that a $16,000 increase in the monthly advertising budget would result in a 150 unit increase in monthly sales. What should be the overall effect on the company's monthly net operating income of this change?

increase of $17,250

increase of $1,250

decrease of $1,250

decrease of $16,000