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
In vitro fertilization is indicated in: 
Select and explain. 
A. Tubal pathology, B. Uterine dysfunction, C. Ovarian pathology, D. Azoospermia
A: Tubal pathology
Answer: A: Tubal pathology 
Explanation: IVF was first developed as a means to overcome infertility resulting from irreparable tubal disease as fertilization takes place in fallopian tube.
Now the spectrum of IVF has broadened and is indicated in number of conditions -
In female infertility
• In male infertility:
– When sperm count is < 5 million/ml
– Repeated IUI failure
• Multifactor infertility
• Unexplained infertility