Marty and Sandra, two CPAs, are completing the audit of MCFly LLC, a regional distributor of food products in the southeastern United States, and are discussing the client's system of internal control. Which of the following statements pertaining to internal control is accurate? MCFly LLC should allow the external auditors to determine where preventive and controls are most effective, and allow the auditors to implement accordingly. MCFly LLC is likely to employ detective controls to detect errors that have occurred after the fact. MCFly LLC is required by benerally accepted auditing standards to use both preventive and detective controls in all areas of the business. MCFly LLC is likely to employ detective controls to each transaction to prevent errors from occurring during processing