A cement manufacturer has supplied the following data: Tons of cement produced and sold Sales revenue Variable manufacturing expense FIxed manufacturing expense Varlable selling and Fixed selling and administrative expense Net operating Income 255,000 $1,045,500 $ 438,000 $ 235,000o administrative expense$ 72,000 $ 225,000 $ 75,500 What is the company's unit contribution margin? (Do not round intermediate calculations.) O $410 o $2.10 O $.12 O $200