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	Answer	Answer
Sales revenue	$20,000	Answer	Answer	$60,000
Variable cost per unit	$10	$2	$14	Answer
Contribution margin	Answer	$800	Answer	Answer
Fixed Costs	$8,300	Answer	$100,000	Answer
Net income	Answer	$600	Answer	Answer
Unit contribution margin	Answer	Answer	Answer	$12
Break-even point (units)	Answer	Answer	4,000	2,000
Margin of safety (units)	Answer	Answer	200	1,000