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: Gynaecology & Obstetrics
[{'content': 'HPV vaccine is? \nSelect and explain. \nA. Monovalent, B. Trivalent, C. Both bivalent and Quadrivalent, D. Only Quadrivalent', 'role': 'user'}, {'content': "Answer: C \nExplanation: Approximately 70% of cervical cancers are caused by the high cancer risk types 16 and 18. Over 90% of genital was are caused by low cancer risk types 6 and 11. Two HPV vaccines are 1) Quadrivalent HPV vaccine (HPV4) types 6, 11, 16, and 18 (Gardasil, Merck) is approved for females and males 9 through 26 years of age. 2) Bivalent HPV (HPV 2) types 16 and 18 vaccine (Cervarix, GlaxoSmithKline) is approved for females 10 through 25 years of age. Routine vaccination of females and males aged 11-12 years is recommended. Ref: Daley M.F., O'Leary S.T., Nyquist A. (2012). Chapter 10. Immunization. In W.W. Hay, Jr., M.J. Levin, R.R. Deterding, J.J. Ross, J.M. Sondheimer (Eds),CURRENT Diagnosis & Treatment: Pediatrics, 21e.", 'role': 'assistant'}]