Standlar Company makes wireless speakers. The standard model price is $360 and variable expenses are $210. The deluxe model price is $500 and variable expenses are $300. The superior model price is $1,600 and variable expense per unit is $600. Total fixed expenses are $300,000. Generally, Standlar sells 8 standard models and 4 deluxe models for every superior model sold. What is the number of deluxe models sold at break-even?

a.500

b.400

c.250

d.100

e.1,000