This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral cavity, Subject name: Surgery
[{'content': 'Which of the following is not an etiological factor for head and neck oral cavity malignancies? \nSelect and explain. \nA. Betel nut, B. HPV infection, C. EBV infection, D. Vitamin A deficiency', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Risk Factors for Cancer of Oral Cavity * Tobacco * Alcohol * Areca nut/pan masala * Sharp or Jagged tooth * Ill-fitting dentures * Syphilitic glossitis * Human papilloma virus * Epstein-Barr virus * Plummer-Vinson Syndrome * Poor nutrition', 'role': 'assistant'}]