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: Surgery
[{'content': "Which of the following is true for thyrotoxicosis: \nSelect and explain. \nA. In Grave's disease antibodies are formed to TSH receptors which result in excessive thyroxine secretion, B. Hashimoto's thyroiditis occurs in young males, C. In primary hypothyroidism, decreased TSH levels are seen, D. In Grave's disease no antibodies are formed to TSH receptors which result in decreased thyroxine secretion", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]