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?
a. $4.20 per unit.b. $0.22 per unit.c. $2.20 per unit.d. $2.00 per unit.