A nurse is teaching a client who is taking atorvastatin daily. Which of the following statements by the client indicates an understanding of the teaching?

A. Routine lab tests are important for monitoring liver function and cholesterol levels while taking atorvastatin. Saying that lab tests are not necessary indicates a misunderstanding of the medication’s potential side effects. B. Grapefruit juice can interact with atorvastatin and increase the risk of side effects such as muscle pain or liver damage. It is important to avoid grapefruit juice to ensure the medication is safe and effective. C. Atorvastatin can be taken with or without food. It does not need to be taken on an empty stomach, so this statement is unnecessary. D. Clay-colored stools are a sign of liver problems, not a normal side effect of atorvastatin. If this occurs, it should be reported to the healthcare provider.