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 woman presents with amenorrhoea of 2 months duration; lower abdominal pain, facial pallor, fainting duration; lower abdominal pain, facial pallor, fainting 
Select and explain. 
A. Ruptured ovarian cyst, B. Ruptured ectopic pregnancy, C. Threatened abortion, D. Septic abortion
B: Ruptured ectopic pregnancy
Answer: B: Ruptured ectopic pregnancy 
Explanation: None