XYZ Inc. sells a single product for $12 per unit. Variable production costs are $6 per unit. Fixed overhead costs amount $10,000 per month. Variable selling costs are $1 per unit. Fixed selling costs are $5,000 per month. Last month, the company produced 10,000 units and sold 8,000 units. What is XYZ's contribution margin per unit?

Multiple Choice

1- $5

2- $1

3- $6