Family Furniture manufactures two products Chairs and Sofas. The following data are available: Chairs Sofas Sales price $510 $720 Variable costs $400 $425 The company can manufacture 4 chairs per machine hour and 1 sola(s) per machine hour. The company's production capacity is 8,600 machine hours per month. What in the contribution margin por machino hour for sofa? OA 1,180 OB. 51,475 OC. $1,145 OD. $295