This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics
In a fetus highest O2 concentration found in 
Select and explain. 
A. svc, B. ivc, C. right ventricle, D. aoa
B: ivc
Answer: B: ivc 
Explanation: Highest o2 concentration umblical vien > ivc > svc> =ra=rv > umblical aery Reference: GHAI Essential pediatrics, 8th edition