The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Oral prophylaxis is contraindicated in:   (A) Prepubertal gingivitis   (B) Pregnancy gingivitis   (C) Ulcerative refractory gingivitis   (D) Leukemic gingivitis
['(D) Leukemic gingivitis <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Prepubertal gingivitis \n (B) Pregnancy gingivitis \n (C) Ulcerative refractory gingivitis \n (D) Leukemic gingivitis <> possible answers', '  Oral prophylaxis is contraindicated in: <> context@']