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': 'Freezing point of normal human plasma is: \nSelect and explain. \nA. 4° C, B. 0° C, C. –0.54° C, D. –1.54° C', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]