19. Iadanza Corporation is a wholesaler that sells a single product. Management has provided the following cost data for two levels of monthly sales volume. The company sells the product for $195.70 per unit. Salcsvolwne {units} 6000 7000 Cost of sales .............................................. $457,800 $534.100 Selling and administrative costs $621000 $639.100 The best estimate of the total contribution margin when 6,300 units are sold is: a. $177,030 b. $752,220 0. $100,170 d. $638,190 20. Information for Bonanza Company's direct labor cost for February is as follows: Actual direct labor hours 69,000 I Total direct labor payroll $483,000- What were the standard direct labor hours for February? a. 70,000 b. 69,000 0. 72,000 d. 71,400