This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstructed Labour, Subject name: Gynaecology & Obstetrics
[{'content': 'Deep transverse arrest is most commonly seen in? \nSelect and explain. \nA. Anthropoid pelvis, B. Android pelvis, C. Gynaecoid pelvis, D. Platypelloid pelvis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) Android pelvisREF: Dutta 6th ed p. 346PelvisComplicationsAndroidDeep transverse arrestAnthrapoidFace to pubis deliveryGynaecoidNormal pelvisPlatypelloidAsynclitism', 'role': 'assistant'}]