How many units must Maslow Industries sell in order to achieve an after$-$tax profit of $$225,000$ if the company has fixed costs of $$350,000,$ a selling price of $$75$ per unit, variable costs of $$35$ per unit, and an income tax rate of $40$ percent?

a$.11,000$

b$.8,750$

c$.14,375$

d$.18,125$