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: Gynaecology & Obstetrics
[{'content': 'In pregnancy which is abnormal finding ? \nSelect and explain. \nA. Venous hum, B. Third beat sound, C. Diastolic murmur, D. Supra - clavicular murmur', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Supra - clavicular murmur', 'role': 'assistant'}]