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: Anatomy
[{'content': 'Temporomandibular joint is a? \nSelect and explain. \nA. Plain joint, B. Condylar joint, C. Ball and Socket joint, D. Saddle shaped joint', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Condylar joint', 'role': 'assistant'}]