Money market accounts, certificates of deposit, bonds and commercial paper are all forms of short-term investment vehicles

As the technology and customers become more sophisticated,

A. Sales managers hire younger workers B. Sales managers hire people with technical backgrounds C. The quality of the presentation must get better D. Industrial buyers are leaving the industry E. Interpersonal skills are becoming less important

Which of the following statement is true regarding engagement workpapers?

a. Each workpaper should be signed and dated by the internal auditor performing the work. b. Workpapers must be retained for five years. c. Using prior workpapers can help the auditor avoid over-auditing. d. Workpapers must be paper documents. e. Copies of all documents examined should be included in the workpapers.