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': 'Tapping is required in a screw which is: \nSelect and explain. \nA. Fluted., B. Non fluted., C. Self drilling., D. Self tapping.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Self tapping screw eliminates the need for tapping. Fluted screws have flutes at the end that act as tap and collect bone debris as the screw is advanced.', 'role': 'assistant'}]