In Most Merchandising Firm Audits, the Auditor's Concern Over Sales

In most merchandising firm audits, the auditor's concern over sales adjustment transactions is based upon the:

A) sheer number and value of these transactions.
B) implication these transactions have for operating efficiency.
C) poor controls normally found over these transactions and the inherent lack of documentation.
D) lack of proper authorization for these transactions.
E) potential use of these transactions to conceal a theft of cash.