Which of the Following Statements Is Not Correct

Which of the following statements is not correct?

A) Analytical procedures used in the planning phase of the audit are primarily directed at understanding the client's business and directing the auditor's attention to areas that may contain possible misstatements.
B) Analytical procedures used in the completion phase are primarily aimed at assessing going concern and secondarily aimed at directing the auditor's attention to areas that may contain possible misstatements.
C) Analytical procedures must be used in the planning and completion phases of the audit, and are optional in the testing phase.
D) Analytical procedures used in the completion phase are primarily aimed at directing the auditor's attention to areas that may contain possible misstatements and secondarily aimed at assessing going concern.