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': 'Alkaptonuria an inherited metabolic disorder is due to the deficiency of \nSelect and explain. \nA. Homogentisate oxidase, B. Cystathionase, C. Pheylalanine hydroxylase, D. Tyrosine transaminase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]