You are helping a person with self-administering their medications. What step should you take to confirm you have the right person?

a) Verify the person's identity using two identifiers.
b) Give over-the-counter medications, then verify the person's identification.
c) Confirm that the person has taken their previous medications.
d) You do not need to verify the person's identity if you have been taking care of them for at least 2 weeks.