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: Surgery
[{'content': 'Patient having fibroma of size 1.5 cm over the floor of the mouth, recommended biopsy: \nSelect and explain. \nA. Excisional biopsy, B. Incisional biopsy, C. Punch biopsy, D. Brush biopsy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]