After Surgery, the Nurse Notes a Patient Is Unable to Achieve

After surgery, the nurse notes a patient is unable to achieve pain relief from the analgesics prescribed. A review of the patient's medical records reveals a history of alcohol abuse. What inferences can the nurse make?

A) The patient is likely cross-tolerant to the prescribed analgesic.
B) The patient has an unreported addiction to the pain medication being prescribed.
C) The patient has a history of using this medication at home.
D) The patient has a dual diagnosis relating to alcohol and drug addiction.