The Nurse Administers the Preoperative Medication to the Patient One

The nurse administers the preoperative medication to the patient one hour before elective surgery,and then discovers the preoperative consent is not signed.Which action by the nurse is the most appropriate?

A) Have the patient sign the consent quickly,before the medication begins taking effect.
B) Have a family member or medical power of attorney sign the consent.
C) Send the patient to the holding area without a signed consent.
D) Notify the health-care provider that surgery will need to be canceled.