Accounting Information Systems 7th Edition by Cynthia Heagy,Constance Lehmann

Exercise 21

Which of the following statements about internal control is correct?
a. Properly maintained internal control reasonably ensures that collusion among employees will never occur.
b. The internal auditor is responsible for the development and testing of internal control.
c. With a very strong internal control systems, the auditor has no need to perform substantive tests on significant account balances.
d. The cost-benefit relationship is a primary criterion that should be considered in designing internal control.