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: Pathology
[{'content': 'What causes edema in nephrotic syndrome? \nSelect and explain. \nA. Na and water restriction, B. Increased venous pressure, C. Hypoalbuminemia, D. Hyperlipidemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: . Hypoalbuminemia', 'role': 'assistant'}]