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
Sonosalpingography is done for : 
Select and explain. 
A. Measuring basal body temperature, B. To detect pregnancy, C. Testing tubal patency, D. Determining anovulatory cycel
C: Testing tubal patency
Answer: C: Testing tubal patency 
Explanation: Testing tubal patency