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': 'Skin cancer which can occur due to exposure to light is - \nSelect and explain. \nA. Melanoma, B. Squamous cell carcinoma, C. Kaposis sarcoma, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Exposure to sunlight (UV rays) is the most significant predisposing factor for.\n\nBasal cell carcinoma of skin.\nSquamous cell carcinoma of skin.', 'role': 'assistant'}]