Kinnane's Fine Furniture manufactures two models, Standard and Premium. Weekly demand is estimated to be 104 units of the Standard Model and 71 units of the Premium Model. The following per unit data apply: Standard $21 Premium $30 Contribution margin per unit Number of machine - hours required The contribution per machine -hour is O A. $147 for Standard, $150 for Premium O B. $21 for Standard, $30 for Premium O C. $3 for Standard, $6 for Premium OD. $14 for Standard, $25 for Premium