The Dotson Company began business on January 1, 2016. During the year, the company paid $120,000 for materials used in the production process and $300,000 in wages for the production workers. The rent and utilities of the manufacturing plant totaled $80,000. Selling costs amounted to $150,000. The company made 250,000 units and sold 210,000 units for $5 each. What was the company’s production cost per unit?