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': 'Oedema is caused by fall in plasma proteins below \nSelect and explain. \nA. 0.50%, B. 5%, C. 15%, D. 50%', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `d' i.e., 50% o Normal plasma protein is 6-8 gm/d1. o Edema occurs when plasma protein falls below 5gm/d1. fall in percentage is (5/8 x 100):.=-: 63%. So, edema occurs when plasma proteins falls below 63% of normal.", 'role': 'assistant'}]