Q. Which of the following is true regarding performance of the following audit tasks while obtaining an understanding of internal control? I. Obtain an understanding of the design of controls. II. Determine whether inter controls have been implemented. III. Evaluate the operating effectiveness of controls.

a. The auditor must perform I and II, and is allowed, but not required to perform III. b. The auditor must perform I, II, and III. c. The auditor must perform I and II, but may not perform III. d. The auditor may, but is not required to, perform I, II, and III.