Beds Lie Around Furniture manufactures two products: Couches and Beds. The following data are available: Couches Sales price $510 $730 Variable costs $380 $375 The company can manufacture either 3 couches per machine hour or 2 bed(s) per machine hour. The company's production capacity is 10,200 machine hours per month What is the contribution margin per machine hour for couches? O A $650 B. $130 OC. $390 OD. $2,670