13. Which of the following best describes the concept of audit risk? A) the risk of the auditor being sued because of association with an audit client B) the risk that the auditor will fail to perform a necessary audit procedure C) the risk that auditors use audit procedures that are inappropriate D) the risk that the auditor will provide an unmodified opinion on financial statements that are, in fact, materially misstated 14. Audit evidence includes information obtained by the auditor that: A) the auditor uses to arrive at the conclusions on which the auditor's opinion is based B) is included in the accounting records C) contradicts management's assertions in the financial statements D) all of the above E) A and B