This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concepts of Immunity, Classification of Vaccines, Subject name: Social & Preventive Medicine
[{'content': 'Which one of following is Polysaccharide vaccine:- \nSelect and explain. \nA. Peussis, B. Hepatitis B, C. Meningococcal, D. Yellow fever', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Polysaccharide vaccines are: Typhim-Vi Pneumococcal vaccine Meningococcal vaccine Hib.', 'role': 'assistant'}]