Which of the following statements about the audit risk model is correct? A. Auditors assess the inherent risk, control risk and detection risk to estimate the audit risk, and use the audit risk to determine the level of audit evidence required. B. When a client has sophisticated internal controls, auditors can completely forgo collection of audit evidence. Client's inherent risk measures to what extent the client's financial statements are susceptible to errors and fraud, and how well the client can identify and correct these errors and fraud themselves. D. The audit risk is the risk that auditors issue a qualified or adverse audit opinion to a financial statement that is not materially misstated. If a client's internal controls are effective, less audit procedures are required to achieve the same level of audit risk