A volume-based cost system is likely to assign more manufacturing overhead costs to products:

	a.	that sell more units than others
	b.	that are more complex or difficult to manufacture than others
	c.	with higher per-unit materials costs than others
	d.	with more activity costs than others

All else being equal, what happens to the unit contribution margin and the contribution margin ratio if the sales price per unit increases?

	a.	Both unit contribution margin and contribution margin ratio decrease.
	b.	Unit contribution margin increases while contribution margin ratio decreases.
	c.	Unit contribution margin decreases while contribution margin ratio increases.
	d.	Both unit contribution margin and contribution margin ratio increase.