Which of the following statements about cost of goods sold is wrong?

a. It is also called cost of sales.

b. Calculating cost of goods sold for channel intermediaries is typically is simpler i.e. less involved than calculating it for manufacturers .

c. Raw material is considered in determining cost of goods sold for channel intermediaries.

d. Both beginning and ending inventories are considered in determining cost of goods sold.

e. Working in progress is considered in determining cost of goods sold for manufacturers.