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: Physiology
[{'content': 'Increased anion gap is seen in: \nSelect and explain. \nA. Enterocutaneous fistula, B. Illeostomy fistula, C. Lactic acidosis, D. All', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Lactic acidosis', 'role': 'assistant'}]