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
Arch of Aoa develops from which aoic arch aery ? 
Select and explain. 
A. Right Pt, B. Right 3rd, C. Left 4th, D. Left 3rd
C: Left 4th
Answer: C: Left 4th 
Explanation: Ans. is 'c' i.e., Left 4th