Lie Around Furniture manufactures two products: Couches and Beds. The following data are available: Sales price Variable costs Couches $520 $390 Beds $710 $395 The company can manufacture either 4 couches per machine hour or 1 bed(s) per machine hour. The company's production capacity is 7,700 machine hours per month. What is the contribution margin per machine hour for beds? A. $1,260 B. $1,105 C. $1,575 D. $315