This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Gynaecology & Obstetrics
A 35 year female presented with complaints of infeility. She has previous history of PID. Preliminary investigations like USG showed normal organs and hormone levels were also normal. What is the next best investigation? 
Select and explain. 
A. Repeat USG, B. Hysterosalpingography, C. Endometrial biopsy, D. Urine culture and sensitivity
B: Hysterosalpingography
Answer: B: Hysterosalpingography 
Explanation: Hsg : - It is the procedure to see the uterus and the tubes Done using leech Wilkinson cannula Done in 1st half of the menstrual cycle preferably Drawbacks of hsg : 1) exterior of the tubes is not visible Best test is laparoscopic chromopeubation