The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following gingival retraction cord is used in hypertensive patient?   (A) Plain retraction cord   (B) Retraction cord with 2% racemic epinephrine   (C) Retraction cord with 8% aluminium chloride   (D) None of the above
['(C) Retraction cord with 8% aluminium chloride <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Plain retraction cord \n (B) Retraction cord with 2% racemic epinephrine \n (C) Retraction cord with 8% aluminium chloride \n (D) None of the above <> possible answers', '  Which of the following gingival retraction cord is used in hypertensive patient? <> context@']