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: Unknown
Investigation of choice for endometrial svnechea is- 
Select and explain. 
A. Endometrial sampling, B. Hysteroscopy, C. Colposcopy, D. Ultrasound
B: Hysteroscopy
Answer: B: Hysteroscopy 
Explanation: Ans-B