3. Which is true of benign prostatic hypertrophy (BPH)?
a. It is the enlargement of the bladder that occurs during the later decades of life.
b. Ten percent of men at the age of 50 have some degree of BPH, and at the age of 80, this increases to 25%.
c. The cause of BPH is unknown but is believed to be related to enzymatic changes that occur as a man ages.
d. With this disorder, the tissue compresses the urethra, causing a restriction in the flow of urine.