The Nurse Is Assessing the Mouth of a Client Who

The nurse is assessing the mouth of a client who uses smokeless tobacco for signs of oral cancer. Which of the following findings is of most concern?

A) Bleeding during tooth brushing
B) Painful blisters at the border of the lips
C) Red, velvety patches on the buccal mucosa
D) White, curdlike plaques on the posterior tongue