This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology of Ear and Malformations, Subject name: ENT
[{'content': 'Stapes develop from - \nSelect and explain. \nA. 1st arch, B. 2nd arch, C. 3rd arch, D. 4th arch', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 2nd archo External auditary canal - First branchial cleft.o Auricle (pinna) - First & second branchial (pharyngeal) arch.o Middle ear cleft (Eustachian tube, tympanic cavity, attic, antrum, mastoid air cells) - 1st & 2nd arch,o Malleus, incus - 1st arch,o Stapes (except footplate) - 2nd arch,o Footplate of stapes and annular ligament - Otic capsule.", 'role': 'assistant'}]