This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'Placenta prae is seen in all the following except \nSelect and explain. \nA. Large placenta, B. Previous CS scar, C. Primigravida, D. Previous placenta prae', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Multiparity', 'role': 'assistant'}]