A nurse in a provider's office is talking with a client who takes oxybutynin. The client asks why he does not urinate as often. Which of the following information should the nurse include about the action of oxybutynin.

The medication prevents the bladder muscles from involuntarily contracting.

The medication reduces the rate at which the kidneys filter waste.

The medication blocks the nervous system impulse to produce urine.

The medication decreases the sensitivity of the urethral sphincter.