* A. Book value per common share ratio is lower than that of the prior year:This represents year- over-year comparison, which is an example of historical benchmarking, not internal benchmarking.
* B. Staff turnover ratio is higher than the comparable organization in the same industry:This represents external benchmarking, as it involves comparing against a peer organization.
* C. Utilities expense of the sales unit is higher than that of the customer service unit:Correct. This is internal benchmarking, as it compares performance metrics within the same organization.
* D. Sales are significantly higher than the industry's average for five years:This is an example of external benchmarking against the industry standard.
CIA Exam Syllabus Reference:
Domain V: Performing Internal Audit Services - Benchmarking Techniques.