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': 'Temperomandibular joint is: \nSelect and explain. \nA. Devoid of the synovial membrane., B. Has no synovial fluid., C. Has rudimentary synovial membrane., D. The synovial membrane does not cover the articular surface.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Temporo-mandibular joint is weight-bearing joint though\xa0not covered by hyaline cartilage like sterno-clavicular\xa0joint. Clavicle ossifies at five weeks followed by mandible\xa0at six weeks. Absence of hyaline cartilage is because no\xa0cartilaginous precursor exists at that time. This does not\xa0mean that the joint is non-weight bearing, it is the early\xa0ossification which has made the joint free of hyaline\xa0cartilage.', 'role': 'assistant'}]