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
Which of the following is true regarding vessels in the umbilical cord : 
Select and explain. 
A. Two aeries & two vein, B. One a & one vein, C. Two a & the left vein, D. Two a & the left vein
C: Two a & the left vein
Answer: C: Two a & the left vein 
Explanation: C. i.e. Two aeries and the left vein;