Problem: A nurse is teaching a client who has type 1 diabetes mellitus about the peak time of neutral protamine Hagedorn (NPH) insulin. Which of the following statements by the client indicates an understanding of the teaching? Need Online Tutoring? "NPH insulin peaks in 1 to 5 hours." "NPH insulin is peakless." "NPH insulin peaks in 6 to 14 hours." "NPH insulin peaks in 12 to 24 hours."