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: Medicine
[{'content': "An increase in protein without pleocytosis in cerebrospinal fluid is seen in - \nSelect and explain. \nA. Froin's syndrome, B. Guillain Barre syndrome, C. Pyogenic meningitis, D. Tuberculous meningitis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]