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': 'The most common pre-malignant condition of oral carcinoma is ? \nSelect and explain. \nA. Leukoplakia, B. Erythroplakia, C. Lichen planus, D. Fibrosis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Leukoplakia o There are two premalignant lesions for oral Cancer ? i) Leukoplakia ii) Erythroplakia o Leukoplakia is the most common premalignant lesions. o But, the risk of malignant transformation of erythroplakia is much higher than that seen with leukoplakia. o The most common predisposing factor for both these conditions is smoking.", 'role': 'assistant'}]