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: Pathology
[{'content': 'Increased incidence of squamous cell carcinoma of the skin is due to all except: \nSelect and explain. \nA. Ultraviolet radiation, B. Actinic keratitis, C. Alcohol, D. None of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]