This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
[{'content': 'CSF Chloride is decreased in \nSelect and explain. \nA. Chronic alcoholism, B. General Paralysis of insane, C. Pyogenic meningitis, D. Tubercular meningitis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: CSF from tuberculous meningitis often develops a spider web clot on standing Other CSF findings are increased lymphocytes, decreased chloride. The use of PCR and DNA probes may help detect the bacilli speedily and more often.', 'role': 'assistant'}]