A nurse at a provider's office is instructing a client who is scheduled for an outpatient barium swallow. Which of the following statements by the client indicates an understanding of the teaching?

A. A barium swallow is a noninvasive imaging test that involves swallowing contrast material, not IV contrast. B. Clients are typically instructed to remain NPO for 8 hours before the procedure. C. The test usually takes only about 30 minutes to 1 hour, so an all-day stay is unnecessary. D. Barium can temporarily lighten the color of stools, and clients should also be instructed to drink fluids to help eliminate the contrast from the GI tract.