Explanation The answer is b.
(Scott, 8/e, pp 762–765.) Most cases of urethral
diverticula result from an infectious and not congenital etiology. This is
demonstrated by the fact that most detailed urologic examinations of children
are normal. Infections secondary to intercourse or other urinary tract
infections may make the urethra more susceptible to trauma or stricture
and result in dysuria, frequency, urgency, and incontinence.