23) 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: Selling price Direct materials Direct labor ($16 per hour) Variable support costs ($5/machine-hour) Fixed support costs Model X Model Y ModelZ $52 $60 8 8 16 16 5 12 12 $74 8 32 10 12 10 If there is excess capacity, which model is the most profitable to produce?