With Respect to the Purchasing Cycle, It Is Particularly Important

With respect to the purchasing cycle, it is particularly important for the auditor _______.

A) to closely check the revenue and associated contra-revenue accounts
B) to be knowledgeable about the entity, the types of sales the entity makes, and how those sales support the earnings generation of the entity
C) to be knowledgeable about the entity, the types of purchases the entity makes, and how those purchases support the earnings generation of the entity
D) to determine the net realizable value of accounts receivable