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 woman presents with amenorrhea of 2 months duration; lower abdominal pain, facial pallor fainting and shock. Diagnosis is: \nSelect and explain. \nA. Ruptured ovarian cyst, B. Ruptured ectopic pregnancy, C. Threatened aboion, D. Septic aboion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The classic history of acute abdominal catastrophe with fainting attack & collapse, associated with features of intraabdominal haemorrhage in a woman of child bearing age points to a ceain diagnosis of acute rupture ectopic. The women in question fulfills most criteria including the characteristic fainting attack. Ref: Ultrasound in Obstetrics and Gynecology, Volume 1 By Eberhard Merz, F. Bahlmann, 2004, Page 73 ; Management of Common Problems in Obstetrics and Gynecology edited by T. Murphy Goodwin, Main N. Montoro, Laila Muderspach, Richard Paulson, Subir Roy, 2010, page 275. ; Textbook of Obstetrics By D.C.Dutta, 5th Edition, Page 198', 'role': 'assistant'}]