#$6.$ Triangle Pediatrics currently provides $1,000$ visits per year at a price of $$45$ per visit. The variable

cost per visit $($variable cost rate$)$ is $$23,$ and total fixed costs are $$15,000.$

Based on this scenario, what is the contribution margin for a volume of $1,000$ units?

Choice: $$15,000$

Choice: $$45,000$

Choice: $$22,000$

Choice: $$38,000$