Please explain how volume based cost system react. I don't clearly understand the selected answer.

Let's say, If total cost pool is stable and we can control cost driver... The overhead applied depends on the production, If A use 20 000 Machine hrs and B uses 40 000 machine hrs, the o'h applied would be more on B.

Similar case, The more I make the more o'h cost is incurred and also applied to that product! (Correct me if I'm wrong)

A volume-based cost system is likely to assign more manufacturing overhead costs to products: Selected Answer: that sell more units than others. Answers: that are more complex or difficult to manufacture than others. that sell more units than others. with higher per-unit materials costs than others. with more activity costs than others.Volume-based cost systems tend to: Selected Answer: Under-cost low-volume products and over-cost high-volume products. Answers: Under-cost low-volume products and under-cost high-volume products. Under-cost low-volume products and over-cost high-volume products. Over-cost low-volume products and under-cost high-volume products. Over-cost low-volume products and over-cost high-volume products