Which metal is used for decorative purposes?

What is the most common cause of chronic viral hepatitis in the United States?

A) Hepatitis D B) Hepatitis E C) Hepatitis B D) Hepatitis C

On routine examination of a 52-year-old male pipe smoker, an asymptomatic tissue change was found in his palate. The entire hard palate was white with occasional red dots. He has:

a. Candidiasis b. Nicotine stomatitis c. Squamous cell carcinoma d. Frictional hyperkeratosis e. Major aphthous ulcer