A test for the presence of fructose in the semen is an easy indicator that can give a possible explanation to no sperm seen in the ejaculated fluid. A negative test would likely indicate which of the following rationals?

A)a reason can't be determined by a fructose test

B)there isn't a contribution from the seminal vesicles, so there is a possible obstruction in the upper portion of the reproductive tract

C)there is no contribution from the epididymis so there is a cellular malfunction so no sperm are produced

D)there isn't a contribution from the prostate gland, so there is a possible obstruction in the lower portion of the reproductive tract