Vanguilder combines all manufacturing overhead into a single cost pool and allocates this overhead to products by using machine hours. Activity-based costing would likely show that with Vanguard's current procedures that:

a. All of the company's products are undercosted.

b. The company's high-volume products are undercosted.

c. All of the company's products are overcosted.

d. The company's high-volume products are overcosted.

e. The company's low-volume products are overcosted.