The answer is A) Acamprosate. Acamprosate is cleared by the renal system and so should be avoided or used with caution depending on the kidney function of this patient. Naltrexone is contraindicated in patients with liver damage which is not the case for this patient. Disulfiram can cause headaches and a metallic taste as common side effects but is not contraindicated in this patient.

Publication reference : Swift RM, Aston ER. Pharmacotherapy for alcohol use disorder: current and emerging therapies. Harv Rev Psychiatry. 2015;23(2):122-33.
Reference URL: http://journals.lww.com/hrpjournal/Abstract/2015/03000/Pharmacotherapy_for_Alcohol_Use_Disorder___Current.7.aspx