This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Ophthalmology
[{'content': 'Which of the following cranial nerve palsy leaves the eye "down and out"? \nSelect and explain. \nA. Trochlear, B. Oculomotor, C. Optic, D. Abducens', 'role': 'user'}, {'content': 'Answer: B \nExplanation: CN3 lesion causes dilated pupil, down-and-out eye, droopy eyelid.', 'role': 'assistant'}]