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: Pharmacology
Prolonged treatment with INH leads to a deficiency of? 
Select and explain. 
A. Pyridoxine, B. Thiamine, C. Pantothenic acid, D. Niacin
A: Pyridoxine
Answer: A: Pyridoxine 
Explanation: Isoniazid can cause peripheral neuropathy due to deficiency of pyridoxine.