A client is on mechanical ventilation and the client's spouse wonders why famotidine is needed since the client "only has lung problems." What response by the nurse is best?

It will prepare the gastrointestinal tract for enteral feedings.

It will increase the motility of the gastrointestinal tract.

It will keep the gastrointestinal tract functioning normally.

It will prevent ulcers from the stress of mechanical ventilation.