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: Pediatrics
Umbilical cord has - 
Select and explain. 
A. 1 vein and 2 aeries, B. 2 vein and 2 aeries, C. 1 vein and 1 aery, D. 2 veins and 1 aery
A: 1 vein and 2 aeries
Answer: A: 1 vein and 2 aeries 
Explanation: Ans. is 'a' i.e., 1 Vein and 2 aeries