A 40 yr old women presents with progressive palmoplantar pigmentation.X-ray spine shows calcification of intervertbral discs. On adding Benedictâ€™s reagent to urine, it gives greenish brown precipitate and blue black supernatant fluid.What is the diagnosis ?

A 40 yr old women presents with progressive palmoplantar pigmentation.

1.	A 40 yr old women presents with progressive palmoplantar pigmentation.X-ray spine shows calcification of intervertbral discs. On adding Benedictâ€™s reagent to urine, it gives greenish brown precipitate and blue black supernatant fluid.What is the diagnosis ?
A.	Alkaptonuria
B.	Phenynletonuria
C.	Argininosuccinic aciduria
D.	Tyrosinemia type-2
Answer» B. Phenynletonuria