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': 'Which among the following is the most common site of Felon? \nSelect and explain. \nA. Index finger, B. Ring finger, C. Little finger, D. Thumb', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Felons are closed-space infections of the fingeip pulp. Staphylococcus aureus is the most common cause. Thumb and index finger are the most commonly affected digits. Felons are characterized by marked throbbing pain, tension, and edema of the fingeip pulp.', 'role': 'assistant'}]