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: Physiology
[{'content': 'Albumin is \nSelect and explain. \nA. Nucleo protein, B. Chromo protein, C. Phospho protein, D. Simple protein', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]