This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology, Subject name: Anatomy
[{'content': 'What are the vessels in umbilical cord? \nSelect and explain. \nA. 1 artery, 2 veins, B. 2 arteries, 1 vein, C. 1 artery, 1 vein, D. 2 arteries, 2 veins', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B 2 arteries, 1 veinRef: I.B. Singh, 9th ed. pg. 59"Remember 2AV"* Umbilical cord is the structure which connects mother to fetus and acts as a bridge for transfer of blood and other nutrients from mother to baby.* It contains 2 arteries and one vein. Arteries carry deoxygenated blood from fetus to mother while vein carries oxygenated blood from mother towards fetus.* Cord contains Wharton\'s jelly and the structures embedded in this are:# 2 arteries and 1 vein# Allantois and# Remains of Vitello intestinal duct', 'role': 'assistant'}]