Which of the Following Statement Is Not True

Which of the following statement is not true?

A) Viagra acts to increase blood flow to the penis during sexual arousal.
B) BPH, a benign prostatic hyperplasia is suspected when men have a more frequent urge to urinate and produce a weaker stream of urine.
C) Prostate enlargement is often due to the presence of a normal hormone (5-alpha reductase) present at an inappropriate time in development.
D) Enlargement of the prostate puts pressure on the vas deferens leading to difficulty urinating.
E) All of the statements listed are true.