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': "True statement about dysthyroid eye disease (grave's ophthalmopathy) is - \nSelect and explain. \nA. Decreased power of divergence, B. Most common cause of unilateral proptosis in < 25 years age group, C. Extreme exopthalmos is usually seen in hypothyroidism, D. On looking upwards lower lid does not follow eye movements", 'role': 'user'}, {'content': "Answer: C \nExplanation: Extreme exophthalmos :- In hypothyroidism\nMild exophthalmos :- In hyperthyroidism (thyrotoxicosis , Grave's disease).", 'role': 'assistant'}]