All Terrain Tires Manufactures Three Different Off-Road ATV Tires: Model

Multiple Choice

All Terrain Tires manufactures three different off-road ATV tires: Model A, Model B, and Model C. Plenty of market demand exists for all models. The table below reports the prices and costs per unit of each product:
Assuming that machine hours are limited (i.e., this is the constrained resource) , at what price does Model A become the most profitable model to produce?

A) Any price above $23
B) Any price above $35
C) Any price above $47
D) Any price above $55
E) None of the above