The Nurse Is Assessing a Client's Technique of Self-Monitoring of Blood

The nurse is assessing a client's technique of self-monitoring of blood glucose (SMBG) as part of diabetes management. Which of the following actions indicate a need for further teaching?

A) Washes the puncture site using soap and warm water.
B) Chooses a puncture site in the centre of the finger pad.
C) Hangs the arm down for a minute before puncturing the site.
D) Says the result of 6.1 mmol/L indicates good blood sugar control.