Answer: A 
CO7.F10 is the correct code for this case because it codes for malignant neoplasm of the parotid gland. Additionally, as the patient has a history of alcohol dependence hence, F10 represents that part. 
Option B is not correct because C10.2 is used to code for malignant neoplasm of the lateral wall of the oropharynx. 
Option C is not correct because C10.3 is used to code for malignant neoplasm of posterior wall of oropharynx. 
Option D is not correct because C10.4 is used to code for malignant neoplasm of the branchial cleft.