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: Social & Preventive Medicine
[{'content': 'Severe malnutrition is diagnosed if serum albumin level is less than: \nSelect and explain. \nA. 2 g/dl, B. 2.5 g/dl, C. 3 g/dl, D. 3.5 g/dl', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The best measure of protein nutrition is serum albumin. A level of <3.5 g/dl is considered mild malnutrition while level of less than 3 g/dl is graded as severe malnutrition. Ref: Park 22nd edition, page 565.', 'role': 'assistant'}]