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': 'A 40 year old tobacco chewer was given a routine oral examination; on examination non-scrapable white patch was noticed in his left buccal mucosa.\n\nDiagnosed disease \nSelect and explain. \nA. Normal variation of mouth, B. Developmental disorder, C. Premalignant Lesion, D. Premalignant condition', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]