An Older Client Diagnosed with an Oral Cancer Questions How

An older client diagnosed with an oral cancer questions how the disease was contracted without a smoking history. Which response by the nurse is most appropriate?

A) "Dietary intake high in fat has been linked to oral cancer."
B) "Your history of periodontal disease is a significant risk factor."
C) "It is highly unusual for a nonsmoker to be affected by oral cancer."
D) "Studies show sun exposure may play a role in the development of oral cancers."