This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology, Subject name: Anatomy
[{'content': 'Stapedial artery is derived from which aortic arch: \nSelect and explain. \nA. 1, B. 2, C. 3, D. 4', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. B 2Ref: Netter's Atlas of Human Embryology: 2012 ed. pg. 88* There are six pairs of aortic arches which develop in cephalo-caudal direction.* The 5th aortic arch completely disappears whereas 1st and 2nd disappear partially.* The stapedial artery is derived from the 2nd aortic arch.* Inferior alveolar artery is derived from the 1st aortic arch.", 'role': 'assistant'}]