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 seen in non immune hydrops foetalis except : \nSelect and explain. \nA. Pericardial effusion, B. Large placenta, C. Skin edema, D. Ascites', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pericardial effusion', 'role': 'assistant'}]