This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neoplastic Disorders, Subject name: Surgery
[{'content': 'Anal cancer is associated with \nSelect and explain. \nA. Human papilloma virus, B. EBV, C. HTLV-1, D. Polyoma virus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Human papilloma virusRef: Bailey & Love 26th ed. /1266* The development of anal cancer is associated with infection by human papilloma virus.* The infection may lead to:# Anal warts (condyloma acuminata)# Anal intraepithelial neoplasia# Squamous cell carcinoma.* The risk for anal cancer is increased among homosexual males.* Anal cancer risk is increased in both men and women with AIDS, because of their immunosuppressed state', 'role': 'assistant'}]