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
Double arch aoa arises from? 
Select and explain. 
A. Right 6th aoic arch, B. Left 6th aoic arch, C. Right 4th aoic arch, D. Left 4th aoic arch
D: Left 4th aoic arch
Answer: D: Left 4th aoic arch 
Explanation: HUMAN EMBRYOLOGY-INDERBIR SINGH TENTH EDITION-PAGE NO:254 The arch of aoa is derived from the ventral pa of the aoic sac ,its left horn,and the left fouh arch aery