Which Answer Is Correct?

Springer Products manufactures three different product lines, Model X, Model Y, and Model Z. Considerable market demand exists for all models. The following per unit data apply: Model X Model Y Model Z Selling price $54 $63 $72 Direct materials g 9 9 Direct labor ($13 per hour) 13 13 26 Variable support costs ($5 per machine-hour) 5 10 10 Fixed support costs 11 11 11 Which model has the greatest contribution margin per machine - hour? O A. Model X OB. Model Y O C. Model Z OD. Both Model X and Model Y have the highest and same contribution margin per machine-hour lis sit