Which of the following is a suitable client identifier for nurses to use when identifying a client?

A. This is a reliable and standard identifier used alongside the client’s name to safely verify identity before procedures, medication administration, or diagnostic tests. B. This is subjective information and cannot reliably identify a client, as multiple clients may share similar preferences. C. Room numbers can change frequently and may be shared by multiple clients over time, making this an unsafe identifier. D. Many clients can have the same diagnosis, so using this information alone does not ensure accurate identification and could lead to errors in care.