White Company has two types of customers. Class A customer on average requires four sales call per year and places about 20 orders for a total of 1.000 units Class B customer on average requires 10 sales calls per year and places 60 orders for a total of 1,000 units of the total cost of sales call per year is $14.000 and the total ordering processing costs are $20,000, what is the ABC cost per unit for each customer? $9 for Class A and 525 for Class B 517 for both Class A and B $18 for Class A and $12.50 for Class B None of the above