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
External cephalic version is contraindicated in all except: 
Select and explain. 
A. Breech, B. Twins, C. Placenta pre, D. Previous
A: Breech
Answer: A: Breech 
Explanation: Breech