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': "Goitrous form of autoimmune thyroiditis is called as: \nSelect and explain. \nA. Myxoedema., B. Hashimoto's disease., C. Riedel's thyroiditis., D. All of the above.", 'role': 'user'}, {'content': "Answer: B \nExplanation: Non goitrous form of autoimmune thyroiditis is called primary myxoedema and goitrous form is called Hashimoto's disease. Presence of high serum titres of antithyroid antibodies is characteristic of autoimmune thyroiditis.", 'role': 'assistant'}]