Nonesuch Company sells only one product at a regular price of $7.50 per unit. Variable expenses are 60 percent of sales and fixed expenses are $30,000. Management has decided to decrease the selling price to $6.00 in hopes of increasing its volume of sales. What is the new break-even point in units for Nonesuch Company when the selling price is $6.00?

a.6,667 units

b.20,000 units

c.4,000 units

d.10,000 units