A 20-Year-Old Client with Down Syndrome Is Diagnosed with an Illness.Even

A 20-year-old client with Down syndrome is diagnosed with an illness.Even though the client is able to live in an assisted environment and work part-time for a local bookstore,the parents of the client are adamant about not initiating a course of treatment whose side effects are unknown with Down syndrome clients.According to the nursing code of ethics,to whom is the nurse's first loyalty?

A) The client
B) The parent
C) The physician
D) The nurse