On Night Shift, a Nurse Has Been Asked to Get

On night shift, a nurse has been asked to get a consent signed by a client for a surgical procedure that will occur the following morning. The doctor had been in earlier to talk to the client about the procedure and the relevant information pertaining to it. However, the doctor was too busy and asked the nurse to get the consent signed. The nurse obtains the client's signature and places the consent in the chart. In the morning, right before it is time for the nurse to go home, the client calls her into the room and states, "I don't want to have that surgery done today. I have changed my mind." What should the nurse do in this situation?

A) The nurse should tell the client that it is too bad, but she has signed the form so the surgery will occur anyway.
B) The nurse should notify the supervisor and the physician immediately.
C) The nurse should sit down with the client and ask her why she has changed her mind.
D) The nurse should try to talk the client into changing her mind about refusing surgery.