This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infertility, Subject name: Gynaecology & Obstetrics
Absence of fructose in the semen suggests: 
Select and explain. 
A. Congenital absence of seminal vesicle, B. Paial duct obstruction, C. None, D. Both
D: Both
Answer: D: Both 
Explanation: Absence of fructose suggests congenital absence of seminal vesicle or paial obstructio of the ductal system or both. D.C.DUTTA'S TEXTBOOK OF GYNECOLOGY,Pg no:250,6th edition