This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunization, Subject name: Pediatrics
[{'content': 'Which of the following Human papilloma virus subtypes are not covered by Quadrivalent Anti-cervical cancer vaccine? \nSelect and explain. \nA. Type 6, B. Type 7, C. Type 11, D. Type 16', 'role': 'user'}, {'content': "Answer: B \nExplanation: b. Type 7(Ref: Nelson's 20/e p, Ghai 8/e p 200-201)Quadrivalent HPV vaccine contains serotypes 16, 18, 6 & 11 with aluminium containing adjuvant.", 'role': 'assistant'}]