A cement manufacturer has supplied the following data: Tons of cement produced and sold 240,000 Sales revenue $1,008,000 Variable manufacturing expense $439,000 Fixed manufacturing expense $236,000 Variable selling and administrative expense $41,000 Fixed selling and administrative expense $226,000 Net operating income $66,000 What is the company's unit contribution margin? (Do not round your intermediate calculations.)

$4.20 per unit

$0.22 per unit

$2.20 per unit

$2.00 per unit