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: Dental
[{'content': 'Recommended brushing technique in patients with healing wounds after surgery is: \nSelect and explain. \nA. Modified Stillman., B. Charter, C. Bass, D. Fones.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]