XYZ Inc. sells a single product for $30 per unit. Variable production costs are $12 per unit. Fixed overhead costs amount $10,000 per month. Variable selling costs are $3 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 ABC's contribution margin ratio?

Multiple Choice

• 40%

• 30%

• 50%

• 10%