Which of the following statements are correct regarding the potential audit use of embedded audit modules? Embedded audit techniques:

I. Are designed by internal auditors, therefore they are of limited use to the external auditor.

II. Can be used by both the internal and external auditor to perform substantive audit procedures.

III. Can be designed to provide evidence on the operation of controls and the completeness and accuracy of processing.

a. I only.

b. I and III.

c. II only. «

d.I, U, and HI.