4. a) Under what circumstances does the auditor issue a modified opinion? (4 marks) b) List three types of modified audit opinion and briefly explain the circumstances in which each is appropriate. (6 marks) c) What type of audit opinion should the auditor issue under the following circumstances? Explain your answer. You are about to issue the auditor's report for a client, Felix Co. The financial statements show the following: Profit before tax Total assets Uncorrected misstatements: Overstatement of receivables due to an irrecoverable debt not being written off 540 64,840 620 (5 marks)