The following are multiple choice questions (with answers) about medical knowledge.   **Question:** On a primary 2nd molar caries occur most commonly on   (A) Occlusal pit and fissures   (B) Proximal caries below contact point   (C) Buccal surface   (D) Promixal caries above contact point
['(A) Occlusal pit and fissures <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Occlusal pit and fissures \n (B) Proximal caries below contact point \n (C) Buccal surface \n (D) Promixal caries above contact point <> possible answers', '  On a primary 2nd molar caries occur most commonly on <> context@']