This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Umbilical cord has \nSelect and explain. \nA. 2 veins and 1 aery, B. 1 aery and 1 vein, C. 2 aeries and 1 vein, D. 2 aeries and 2 veins', 'role': 'user'}, {'content': 'Answer: C \nExplanation: This tube of amnion and the structures within it constitutes the umbilical cord.T his cord contains two umbilical aeries and one umbilical vein. REF HUMAN EMBRYOLOGY; Inderbier singh; Tenth edition; Page 67', 'role': 'assistant'}]