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: Gynaecology & Obstetrics
[{'content': 'What is the ratio of length of cervix and body of the uterus before pubey? \nSelect and explain. \nA. 2:01, B. 1:02, C. 1:03, D. 1:04', 'role': 'user'}, {'content': "Answer: A \nExplanation: Before pubey the ratio of length of cervix to corpus is 2:1 At pubey the ratio of length of cervix to corpus is 1:2 During reproductive years the ratio may be 1:3 or 1:4 Ref: Shaw's Textbook of Gynecology, Edition 21, Page 7", 'role': 'assistant'}]