Problem 2 Supply the missing data in each independent case. Case A Case B Case C Case D Case E Unit sales 700 300 ? ? ? Sales revenue $35,000 ? ? $90,000 $50,000 Variable cost per unit $45 $3 $15 ? ? Contribution Margin ? $600 ? ? $20,000 Fixed costs $7,500 ? $60,000 ? ? Operating income ? -$500 ? ? ? Unit contribution margin ? ? ? $2 $4 Break-even point (units) ? ? 5,000 15,000 ? Margin of Safety ? ? 2,000 15,000 2800