The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Cervical resorption after bleaching is prevented by:   (A) 80% alcohol drying immediately after bleaching   (B) Alpha tocopherol applied immediately after bleaching   (C) Sodium perborate + sodium hypochlorite   (D) Sodium perborate + calcium hydroxide
['(D) Sodium perborate + calcium hydroxide <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 80% alcohol drying immediately after bleaching \n (B) Alpha tocopherol applied immediately after bleaching \n (C) Sodium perborate + sodium hypochlorite \n (D) Sodium perborate + calcium hydroxide <> possible answers', '  Cervical resorption after bleaching is prevented by: <> context@']