This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Contracted Pelvis, Subject name: Gynaecology & Obstetrics
[{'content': 'Spot the appearance? \nSelect and explain. \nA. Cork Screw Pelvis, B. Champagne glass Pelvis, C. Gynecoid pelvis, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. Champagne glass PelvisCondition: AchondroplasiaName of Sign: Champagne glass pelvisDescription: The iliac wings are flat with increased acetabular angles and small sacro - sciatic notches. The pelvic appearance is similar to a champagne glass.', 'role': 'assistant'}]