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: Dental
[{'content': "Which of the following is a premalignant lesion of squamous cell carcinoma? \nSelect and explain. \nA. Dermatofibroma, B. Granuloma annulare, C. Actinic keratosis, D. Behcet's disease", 'role': 'user'}, {'content': "Answer: C \nExplanation: Actinic Keratosis & Bowen's disease are premalignant lesions of squamous cell carcinoma.", 'role': 'assistant'}]