14) The relevant range of a company is between 15,000 and 30,000 units produced. When 24,000 units are produced, variable costs are $12.00 per unit. Therefore, when 18,000 units are produced: A) variable costs will remain at $12.00 per unit B) variable costs will total $288,000 C) variable unit costs will increase to $16.00 per unit D) variable unit costs will decrease to $9.00 per unit