The following are multiple choice questions (with answers) about medical knowledge.   **Question:** All of the following are synthetic sharpening stone except:   (A) Silicon carbide   (B) Alumina   (C) Arkansas   (D) Diamond
['(C) Arkansas <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Silicon carbide \n (B) Alumina \n (C) Arkansas \n (D) Diamond <> possible answers', '  All of the following are synthetic sharpening stone except: <> context@']