6. Which of the following best describes the operational audit? a) A review report that provides limited assurance about whether financial statements are fairly stated in accordance with U.S. GAAP. b) A report indicating whether a governmental entity has complied with certain government regulations. c) An evaluation of the effectiveness of key measures used to assess an entity's success in achieving specific targets linked to an entity's strategic plan and vision. d) All of the above. e) None of the above