1) How do variable costs per unit behave?

A. They increase as production decreases.

B. They remain the same throughout production levels within the relevant range.

C. They decrease as production increases.

D. They decrease as production decreases.

2) How do fixed costs per unit behave?

A. They decrease as production decreases.

B. They increase as production decreases.

C. They remain the same throughout production levels within the relevant range.

D. They increase as production increases.