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
A 21 yrs old girl with 8 weeks amenorrhoea, now comes in shock. The likely diagnosis is: 
Select and explain. 
A. Ruptured Ectopic Pregnancy, B. Incarcerated Amnion, C. Twisted Ovarian cyst, D. Threatened Abortion
A: Ruptured Ectopic Pregnancy
Answer: A: Ruptured Ectopic Pregnancy 
Explanation: Always remember: History of acute abdominal catastrophe with fainting attack and collapse i.e. shock following short period of amenorrhea, in a woman of child bearing age always points towards ectopic pregnancy (ruptured) and no other diagnosis.