The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Mantle dentin is a layer next to:   (A) DE]   (B) Pulp   (C) Dentin   (D) Enamel
['(A) DE] <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) DE] \n (B) Pulp \n (C) Dentin \n (D) Enamel <> possible answers', '  Mantle dentin is a layer next to: <> context@']