Answer:
D) Increases No change Decreases
Explanation:
Contribution margin is Sales less Variable Costs. This will increase if the selling price per unit and the variable expense per unit both increase.
Contribution margin ratio is Contribution expressed as a percentage of Sales. This will stay the same when the selling price per unit and the variable expense per unit both increase by the same percentage.
Break-even in units is Fixed Costs divided my contribution per unit. This will decrease as the Contribution margin has increased.