A cement manufacturer has supplied the following data: 258,000 $1,109,400 Tons of cement produced and sold Sales revenue Variable manufacturing expense Fixed manufacturing expense $ 441,000 238,000 Variable selling and administrative expense Fixed selling and administrative expense $ 75,000 228,000 Net operating income 127,400 What is the company's unit contribution margin? (Round your intermediate calculations to 2 decimal places.) Multiple Choice $4.30 per unit