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: Surgery
Absence of fructose in semen indicates - 
Select and explain. 
A. Obstruction to seminal vesicles, B. Obstruction at prostatic urethra, C. Vas deferens obstruction, D. Testicular failure
A: Obstruction to seminal vesicles
Answer: A: Obstruction to seminal vesicles 
Explanation: An absence of fructose in the semen would indicate → seminal vesicle agenesis or obstruction of its duct or the ejaculatory duct.