The Nurse Learns That an Elderly Patient with Ill-Fitting Dentures

The nurse learns that an elderly patient with ill-fitting dentures has been using an over-the-counter preparation for a gum sore over the last month. What instruction should the nurse give this patient?

A) Make an appointment to see the physician.
B) Continue to use the preparation.
C) Change the preparation.
D) Stop wearing the dentures.