Narly Skateboards Manufactures Three Different Product Lines, Base, Long, and Trick

Multiple Choice

Narly Skateboards manufactures three different product lines, Base, Long, and Trick. Considerable market demand exists for all models. The following per unit data apply:
-Which model has the greatest contribution margin per machine-hour?

A) base model
B) long model
C) trick model
D) both the long model and the trick model