A nurse is reinforcing teaching about performing a glucose test with an adolescent client who has diabetes mellitus. Which of the following statements by the client indicates an understanding of the teaching?

A. "I will hold the lancet at a 45-degree angle when piercing my skin.": The lancet should be held at a 90-degree angle to ensure a consistent puncture and adequate blood sample. A 45-degree angle may not produce a sufficient drop for testing. B. "I will stick the side of my finger with the lancet instead of the center.": The sides of the fingertip are less sensitive and offer good blood flow. Using the side reduces discomfort and promotes better long-term compliance with frequent testing. C. "I will collect the first drop of blood by wiping it on the test strip.": The first drop may be contaminated with tissue fluid. It is recommended to wipe away the first drop and use the second drop to ensure an accurate glucose reading. D. "I will place my finger under cool water for a few seconds before the stick.": Cool water may constrict blood vessels and reduce blood flow. Warm water or massaging the hand downward is better to promote circulation before testing.