The DesMaris Company had the following income statement for the month of November 2018:

DesMaris Company Income Statement For the Month of November 2018
Sales ($60 10,000 units)		$600,000
Cost of goods sold:
Direct materials	$120,000
Direct labor	90,000
Variable factory overhead	75,000
Fixed factory overhead	120,000	405,000
Gross profit		$195,000
Selling and administrative expenses:
Variable	$ 15,000
Fixed	90,000	105,000
Operating income		$ 90,000

If DesMaris Company expects sales revenue to increase by 3%, by approximately what percentage will operating income increase?

a. 20%

b. 6.50%

c. 3.5%

d. 10%

e. 9.23%