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': 'A P diameter is maximum in which type of pelvis? \nSelect and explain. \nA. Platypelloid, B. Android, C. Anthropoid, D. Gynaecoid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Remember the following points on pelvis (most of the questions are asked on them).\n\nNormal female pelvis – Gynaecoid pelvis.\nMale type pelvis – Android pelvis.\nMost common type of pelvis – Gynaecoid pelvis.\nLeast common type pelvis – Platypelloid pelvis.\nThe only pelvis with AP diameter more than transverse diameter – Anthropoid pelvis.\nFace to pubes delivery is most common in Anthropoid pelvis.\nDirect occipitoposterior position is most common in Anthropoid pelvis.\nPersistent occipitoposterior position is most common in Android pelvis.\nDeep transverse arrest/ Nonrotation/dystocia is most common in Android pelvis.\nBroad flat pelvis – Platypelloid pelvis.\nTransverse diameter is much more than AP diameter – Platypelloid pelvis.\nEngagement by exaggerated posterior asynclitism occurs in Platypelloid pelvis.\nSuper subparietal instead of biparietal diameter engages in Platypelloid pelvis.', 'role': 'assistant'}]