This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis of Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'Fundal height is more than period of gestation in all except: \nSelect and explain. \nA. Hydramnios, B. IUD, C. Twin pregnancy, D. Hydatidiform mole', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b, i.e. IUDRef. Dutta Obs. 7/e, p 78Condition where the Height of Uterus is more than the Period of Amenorrhea:Mistaken datesTwinsPolyhydramniosBig babyPelvic tumours - Ovarian/fibroidH moleConcealed accidental hemorrhage.Conditions where the Height of Uterus is less than the Period of Amenorrhea:Mistaken datesScanty liquorFetal growth restrictionIntrauterine fetal death.', 'role': 'assistant'}]