This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abnormal labor, Subject name: Gynaecology & Obstetrics
[{'content': 'Most common cause of breech presentation is \nSelect and explain. \nA. Prematurity, B. Contracted pelvis, C. Oligohydramnios, D. Placenta pre', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Causes of breech presentation : Prematurity - Most common cause Undue mobility of the fetus Fetal abnormality Favorable adaptation Ref: Dutta Obs 9e pg 352.', 'role': 'assistant'}]