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: Medicine
[{'content': "Osler's nodes are seen at - \nSelect and explain. \nA. Heart, B. Knee joint, C. Tip of Palm & Sole, D. Anterior abdominal wail", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]