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: Social & Preventive Medicine
[{'content': 'Not true about meningococcal meningitis \nSelect and explain. \nA. Is gram negative organism, B. Carriers are the source of infection, C. Carriers are treated with penicillin, D. Transmitted via droplet infection', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Carriers are treated with Rifampicin.', 'role': 'assistant'}]