This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Do the embryological first pharyngeal arches remain? \nSelect and explain. \nA. Sphenomandibular ligament, B. Stylohyoid ligament, C. Stylomandibular ligament, D. Styloid ligament', 'role': 'user'}, {'content': "Answer: A \nExplanation: The pa of the cailage extending from the region of the middle ear to the mandible disappears, but it's sheath forms the anterior ligament of the malleus and the sphenomandibular ligament Ref: Human Embryology, Inderbir Singh, 10th edition, page no: 131", 'role': 'assistant'}]