A tile manufacturer has supplied the following data:

Boxes of tiles produced and sold		588,000
Sales revenue	$	3,351,600
Variable manufacturing expense	$	1,911,000
Fixed manufacturing expense	$	793,800
Variable selling and administrative expense	$	176,400
Fixed selling and administrative expense	$	147,000
Net operating income	$	323,400

If the company increases its unit sales volume by 5% without increasing its fixed expenses, then total net operating income should be closest to:

$16,170

$386,610

$154,375

$339,570