This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'Which of the following is NOT a feature of thyrotoxicosis? \nSelect and explain. \nA. Palpitation, B. Anxiety, C. Weight loss, D. Menorrhagia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) MenorrhagiaRef: Harrison 19th ed. / 2293* Thyrotoxicosis is characterized by increased sympatho- mimetic action causing palpitations, anxiety and increased BMR causing weight loss. The menstrual abnormality in Graves disease is oligo-menorrhea.* REMEMBER: weight gain with menorrhagia is seen in hypothyroidism. Weight gain with hirusutism with oligomenorrhea is seen in Cushing syndrome.', 'role': 'assistant'}]