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': "Persistent part of the envelope of Meckel's cartilage is: \nSelect and explain. \nA. Stylomandibular ligament, B. Temporomandibular ligament, C. Sphenomandibular ligament, D. Stylohyoid ligament", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Bone begins to develop lateral to Meckel cartilage during\xa0the seventh week and continues until the posterior aspect is covered with bone. Ossification stops at the point that will later become the mandibular lingula, and the remaining part of Meckel’s cartilage continues on its own to form the sphenomandibular ligament and the spinous process of the sphenoid. The part of Meckel’s\xa0cartilage that has been encapsulated with bone appears to have served its purpose as a splint for the intramembranous ossification, and it largely deteriorates.\nKey Concept:\nPersistent part of the envelope of Meckel’s cartilage is sphenomandibular ligament.', 'role': 'assistant'}]