This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adverse Ocular Effects of Systemic Drugs, Subject name: Ophthalmology
[{'content': "Thyroid eye disease is due to - \nSelect and explain. \nA. Thyrotoxicosis, B. Hypothyroidism, C. Euthyroidism, D. Hashimoto's disease", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Thyrotoxicosis o Thyroid eye disease (TED) is also known as Grave's ophthalmopathyo Among patients of TED:# 90% - Thyrotoxicosis# 6% - Euthyroidism# 3% - Hashimoto's disease# 1% - Hypothyroidism", 'role': 'assistant'}]