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: Biochemistry
[{'content': 'In pyridoxine deficiency, tryptophan is conveed to ? \nSelect and explain. \nA. Nicotine, B. Acetoacetate, C. Xantheurenic acid, D. Acetyl CoA', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Xantheurenic acid", 'role': 'assistant'}]