Magpie Inc. sells a single product for $40 per unit. Variable production costs are $12 per unit. Fixed overhead costs amount $54,000 per month. Variable selling costs are $8 per unit. Fixed selling costs are $6,000 per month. Last month, the company produced 10,000 units and sold 8,000 units.

What Is the Margin of safety if the company achieves the pre-tax profit of $200,000

a) 65%

b) 76.92%

c) 8.33%

d) 91.67%