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': 'Best management in Mento-posterior presentation: \nSelect and explain. \nA. Vaginal delivery, B. Forceps delivery, C. Manual rotation, D. Caesarean section', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Caesarean section', 'role': 'assistant'}]