input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Pharyngeal arches are rod like thickning of:   (A) Endoderm.   (B) Ectoderm.   (C) Mesoderm.   (D) All of the above.
output: ['(C) Mesoderm. <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Endoderm.  (B) Ectoderm.  (C) Mesoderm.  (D) All of the above. <> possible answers', '  Pharyngeal arches are rod like thickning of: <> context']