This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inborn Errors of Metabolism, Subject name: Pediatrics
[{'content': 'Ooch ronsis is fou nd in - \nSelect and explain. \nA. Alkaptonuria, B. Tyrosinemia, C. Phenylketonuria, D. Homocystinuria', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Alkaptonuria Alkaptonuriao Deficiency of homogentistic acid oxidase.o Accumulation of homogentistic acid|Destruction of connective tissue|Deposition of black pigment in the sclera ear, nose cartilase, (oochronsis).o Urine become dark on standing.", 'role': 'assistant'}]