Question 4 which of the statements are true: Not yet answered Select one: Marked out of 1.00 O a. In some cases, management can correct deficiencies and material weaknesses before the auditor does significant testing, which may permit a reduction in control risk. P Flag question O b. A design deficiency exists if the person performing the control is not qualified. O C. A significant internal control deficiency is always considered a material weakness. O d. Key controls are not sufficient to achieve the transaction-related audit objectives