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
Best investigation to diagnose ectopic pregnancy is : 
Select and explain. 
A. Urine pregnancy test, B. Laparoscopy, C. USG, D. Hysteroscopy
B: Laparoscopy
Answer: B: Laparoscopy 
Explanation: Laparoscopy