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': 'Normal thyroid weight varies.................... with dietary Iodine content - \nSelect and explain. \nA. Directly propoional, B. Inversely, C. Inverse cubically, D. Not fixed', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e. Inversely", 'role': 'assistant'}]