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': 'Dominant movement of root with relatively less movement of the crown is called \nSelect and explain. \nA. Couple, B. Torque, C. Intrusion, D. Extrusion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]