A nurse is providing teaching to a client who has angina and is prescribed nitroglycerin sublingual tablets. Which of the following statements by the client indicates an understanding of the teaching?

I will dial 911 if I still have pain after taking 3 nitroglycerin tablets 5 minutes apart.

I will dial 911 if 1 nitroglycerin tablet does not relieve my pain, and then I will take another.

I will dial 911 if I still have pain after taking 4 nitroglycerin tablets over a 20-minute period.

I will dial 911 when I have pain and then take the nitroglycerin tablets.

I will dial 911 when I have pain and then take the nitroglycerin tablets.