A nurse is providing teaching to a client who is about to begin using a PCA pump to deliver morphine for postoperative pain management. Which of the following statements by the client indicates an understanding of the teaching?

A. "The lockout interval prevents me from receiving too much medication.": The lockout interval on a PCA pump ensures that the client cannot administer more medication than is safe within a set period, preventing overdose or over-sedation. B. "Each time I push the button, I receive the same amount as a morphine injection.": The PCA pump delivers a smaller, controlled dose of morphine each time the button is pressed, rather than the same dose as a traditional injection. C. "My family can push the button for me on a regular basis.": The client should be the only one pressing the PCA button to prevent overdose and ensure safe administration. Family members should not push the button for the client. D. "It will take about 30 minutes to feel relief after I push the button.": PCA delivers pain medication on demand, and the client may feel relief within a few minutes, not 30 minutes. Pain relief can be quicker depending on the medication’s action and how it’s delivered.