input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Artery of 4th pharyngeal arch:   (A) Right and left CCA.   (B) Right and left subclavian artery and arch of aorta.   (C) Right and left pulmonary arteries.   (D) None of the above.
output: ['(B) Right and left subclavian artery and arch of aorta. <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Right and left CCA.  (B) Right and left subclavian artery and arch of aorta.  (C) Right and left pulmonary arteries.  (D) None of the above. <> possible answers', '  Artery of 4th pharyngeal arch: <> context']