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: Anatomy
[{'content': 'All are true regarding aoic arch derivatives except: \nSelect and explain. \nA. Pulmonary aery develops from 6th arch, B. Maxillary aery derives from 1st arch, C. All 6 arches are not present simultaneously, D. 5th arch is absent in 5% of embryos', 'role': 'user'}, {'content': "Answer: D \nExplanation: D i.e. 5th arch is absent in 5% of embryos - All 6 aoic arches are not present simultaneously. In 50% of embryos 5deg' arch is never formedQ.- There is formation of maxillary aery from 15t archQ; hyoid & stapedial aeries from 2nd arch; common, internal & external carotid from 3rd archQ; arch of aoa & right subclan aery from left & right 4th arch respectivelyQ; and pulmonary aery from 6deg' aoic archyQ", 'role': 'assistant'}]