Which of the following best describes a consulting engagement rather an assurance engagement?

Bank internal auditors review an activity checklist to determine that the loan officer followed proper procedures.

The chief financial officer asks for the internal auditor ' s opinion regarding whether the new accounting pronouncements were properly and comprehensively adopted

An internal auditor is assigned to assess whether a proposed new initiative to convert a customer service system would be cost effective.

Senior management asks the internal audit activity to review compliance with customer data security regulations