Which four elements help prevent incontinence?
a) Pelvic floor muscles, urethral sphincter, bladder capacity, and urethral length
b) Bladder capacity, pelvic floor muscles, dietary habits, and urethral length
c) Pelvic floor muscles, bladder capacity, urethral sphincter, and urethral length
d) Urethral length, dietary habits, bladder capacity, and pelvic floor muscles