LTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the 80 their tion. 6) Rock Creek Bottling Company pays its production manager a salary of $6,000 per month. Salespersons are paid strictly on commission, at $1.50 for each case of product sold 6) For Rock Creek Bottling Company, the cost of the salespersons commissions is an example of. A) a fixed cost. C) a variable cost. B) a mixed cost. D) None of these 7) Wu Company incurred $40,000 of fixed cost and $50,000 of variable cost when 4,000 units of product were made and sold. 7) If the company's volume increases to 5,000 units, the total cost per unit will be: B) $22.50. A) $18.00. C) $20.50. D) $20.00 8) Wu Company incurred $40,000 of fixed cost and $50,000 of variable cost when 4,000) units of product were made and sold. If the company's volume increases to 5,000 units, the company's total costs will be: A) $100,000 B) $80,000 D) $90,000 C) $102,500