Dynondo's Brakes 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 $52 $68 $79 Selling price Direct materials 10 10 10. Direct labor ($12 per hour) 12 12 24 18 18 Variable support coats ($9 per machine-hour) 9 Fixed support coats 13 13 13 If there is excess capacity, which model is the most profitable to produce? Model X Model Y Model 2 Both Model X and Model Y have same and highest profitability