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': 'If a tooth has abnormal mobility, but is not displaced from the socket it is termed as: \nSelect and explain. \nA. Concussion, B. Subluxation, C. Extrusive luxation, D. Partial avulsion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Subluxation\n\nTeeth are sensitive to percussion and have some mobility.\nSulcular bleeding is seen showing damage and rupture of the periodontal ligament fibers.\nPulp responds normal to testing.\nTooth is not displaced.', 'role': 'assistant'}]