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 women at b montns of pregnancy complains of abdominal pain and slight vaginal bleed. On examination the uterine size is above the expected date with absent fetal hea sounds. The diagnosis : \nSelect and explain. \nA. Hydramnios, B. Concealed hemorrhage, C. Active labour, D. Uterine rupture', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b i.e. Concealed hemorrhage', 'role': 'assistant'}]