This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': "The most common ocular motility defect noted in ocular Graves' disease is due to involvement of: \nSelect and explain. \nA. Inferior rectus, B. Medial rectus, C. Medial rectus, D. Inferior oblique", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Inferior rectus', 'role': 'assistant'}]