A cement manufacturer has supplied the following data:

Tons of cement produced and sold	250,000
Sales revenue	$1,100,000
Variable manufacturing expense	$430,000
Fixed manufacturing expense	$289,000
Variable selling and administrative expense	$70,000
Fixed selling and administrative expense	$235,000
Net operating income	$76,000

What is the company's unit contribution margin? (Do not round your intermediate calculations.)

$2.00 per unit

$2.40 per unit

$4.40 per unit

$0.42 per unit