Rocky's Rockers manufactures three models, Standard, Premium, Ultra. Weekly demand is estimated to be 100 units of the Standard Model, 70 units of the Premium Model and 45 units of the Ultra. The following per unit data apply: Ultra Standard $15 Premium $21 $29 Contribution margin per unit Number of machine-hours required per unit 3 4 6 you currently have the capacity to produce and sell 210 units per week showing your work and the number of units of each you would want to produce, prioritize the order of production and explain why you choose the order to produce the Rockers