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': 'Trial of normal labour is contraindicated in: \nSelect and explain. \nA. History of previous classical cesarean section, B. History of previous cesarean section due to CPD, C. No history of prior vaginal delivery, D. History of previous cesarean section due to malpresentation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. History of previous classical cesarean section', 'role': 'assistant'}]