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Helmer's Rockers manufactures two models, Standard and Premium. Weekly demand is estimated to be 100 units of the Standard Model and 70 units of the Premium Model. The following per unit data apply: Standard $18 3 Premium $20 Contribution margin per unit Number of machine-hours required 6. The contribution per machine-hour is A) $18 for Standard, $20 for Premium B) $54 for Standard, $80 for Premium C) $15 for Standard, $16 for Premium D) $6 for Standard, $5 for Premium 7. If there are 496 machine-hours available per week, how many rockers of each model should Jim Helmer produce to maximize profits? A) 100 units of Standard and 49 units of Premium B) 72 units of Standard and 70 units of Premium C) 100 units of Standard and 70 units of Premium D) 85 units of Standard and 60 units of Premium 8. If there are 600 machine-hours available per week, how many rockers of each model should Jim Helmer produce to maximize profits? A) 100 units of Standard and 49 units of Premium B) 72 units of Standard and 70 units of Premium C) 100 units of Standard and 70 units of Premium D) 85 units of Standard and 60 units of Premium