The Patient with COPD Delightedly Tells the Nurse That He

The patient with COPD delightedly tells the nurse that he has quit smoking and is using chewing tobacco.The nurse's best intervention would be to:

A) Congratulate him on his quitting smoking.
B) Warn him of the dangers of oral cancer.
C) Suggest that he add nicotine patches in addition to the chewing tobacco.
D) Point out that he is still addicted and is using tobacco.