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': 'Percentage of scar dehiscence in lower uterine segment caesarean section is: September 2009 \nSelect and explain. \nA. 0.1-2%, B. 2-5 %, C. 5-9%, D. More than 10%', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: 0.1-2% For women who had a prior cesarean bih the rupture can occur at the site of the previous uterine scar. The risk of uterine rupture is about 1.5% or less with the lower segment scar. It is estimated that between 4 and 9% of classical/ hysterotomy uterine scars are at risk for rupture.', 'role': 'assistant'}]