This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oncology, Subject name: Medicine
A 53-year-old woman is being treated for tuberculosis with INH and rifampin.For the above patient with new symptoms, select the most likely acid base disorder. 
Select and explain. 
A. metabolic acidosis, B. metabolic alkalosis, C. respiratory acidosis, D. respiratory alkalosis
A: metabolic acidosis
Answer: A: metabolic acidosis 
Explanation: INH can result in impaired oxygen utilization, leading to lactic acidosis (type B), accumulation of lactate, and increased anion gap.