Red Rose Manufacturers Inc. is approached by a potential customer to fulfill a one-time-only special order for a product similar to one offered to domestic customers. The company has excess capacity. The following per unit dala apply for sales to regular customers: S130 Variable costs: Direct materials Direct labor Manufacturing support Marketing costs Fixed costs. Manufacturing support Marketing costs Total costs sl sisi O A. $293 OB. $650 OC. $440 OD. $430