Which one of the following best describes the inherent limitations that should be recognized by an auditor when considering the potential effectiveness of internal control?

A $$ Procedures that depend on segregation of duties can be circumvented by collusion.

B $q,$ Competent and honest client personnel provide an environment conducive to accounting control and provide absolute assurance that effective control will be achieved.

C $$

Procedures designed to assure the execution and recording of transactions in accordance with proper authorization are effective against irregularities perpetrated by management. $(3)$

D

The benefits expected to be derived from effective internal accounting control usually do not exceed the costs of such control.