You have been dispatched for a "behavioral emergency" at a local homeless shelter. Police are on scene with a 57-year-old male who became confused this morning. The patient's friends indicate this is abnormal for the patient and that he started walking "weird" suddenly and appears to be "staring off into space." Your patient has been homeless for as long as his friends can remember and is a chronic alcoholic. You notice distention of the patient's abdomen. What do you think is wrong with your patient and what substance is responsible for this condition?
A. Korsakoff psychosis - Thiamine deficiency
B. Wernicke encephalitis - Thiamine deficiency
C. Delirium tremens - acute alcohol withdrawal
D. Ascites - chronic alcoholism