This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous System, Subject name: Pathology
[{'content': 'Froin syndrome is associated with? \nSelect and explain. \nA. Spinal meningitis, B. Coagulation of CSF, C. High protein level, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans is 'd' i.e. All of the above Froin's syndrome* Caused by meningeal irritation (e.g. During spinal meningitis) and CSF flow blockage by tumour mass or abscess.* Characterized by coexistence of xanthochromia, high protein level and marked coagulation of CSF.", 'role': 'assistant'}]