A cement manufacturer has supplied the following data: Tons of cement produced and sold Sales revenue Varlable manufacturing expense Flxed manufacturing expense Varlable selling and administrative expense Flxed selling and administrative expense Net operating Income 260,000 $1,066,000 $ 440,000 $ 237,000 $80,000 $ 227,000 $82,000 What is the company's unit contribution margin? (Do not round intermediate calculations.) O $4.10 O $.12 $2.10 O $2.00