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': "All are components of Meig's syndrome, except: \nSelect and explain. \nA. Pleural effusion, B. Ovarian tumour, C. Ascites, D. Pericardial effusion", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]