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': 'Reduction of overbite can be accomplished most readily by which of the following tooth movements? \nSelect and explain. \nA. Intruding maxillary incisors, B. Uprighting maxillary and mandibular incisors, C. Using a high-pull headgear to the maxillary molars, D. Using a lip bumper', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Intruding incisors would decrease overbite while uprighting teeth and using a high-pull headgear could make overbite correction more difficult. A lip bumper would likely have little effect on overbite.', 'role': 'assistant'}]