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
True about phenylketonuria is all except 
Select and explain. 
A. Occurs due to deficiency of phenylalanine hydroxylase, B. High amount of phenylpyruvate in urine, C. Failure to talk or walk, seizures and tremurs., D. Coke coloured urine
D: Coke coloured urine
Answer: D: Coke coloured urine 
Explanation: None