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': 'Which of the following proteins binds with free hemoglobin in the plasma - \nSelect and explain. \nA. Albumin, B. Haptoglobin, C. Pre-albumin, D. Ceruloplasmin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]