A cement manufacturer has supplied the following data: Tons of cement produced and 250, 800 sold sales revenue $1, 160, 800 variable manufacturing 430, 080 expense Fixed manufacturing expense 289, 080 variable selling and 70, 080 administrative expense Fixed selling and 235, 080 administrative expense Net operating income 76, 080 What is the company's unit contribution margin? (Do not round Intermediate calculations.) Multiple Choice O $2.40 O $200 O $4.40