Following are data from 4 separate companies. Supply the missing data in each independent case:

	Case A	Case B	Case C	Case D
Unit Sales	1,000	800	?	?
Sales revenue	$20,000	?	?	$60,000
Variable cost per unit	$10	$2	$14	?
Contribution margin	?	$800	?	?
Fixed Costs	$7,600	?	$100,000	?
Net income	?	300	?	?
Unit contribution margin	?	?	?	$19
Break-even point (units)	?	?	4,000	2,000
Margin of safety (units)	?	?	100	1,000