This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Vitamin deficiency seen in alcoholic with dementia: AP 08; Maharashtra 09; JIPMER 14 
Select and explain. 
A. Thiamine, B. Vitamin B12, C. Riboflavin, D. Pyridoxine
A: Thiamine
Answer: A: Thiamine 
Explanation: Ans. Thiamine