<prompt> Mental retardation is not a feature in this aminoaciduria:PhenylketonuriaHomocystinuriaAlbinismMaple syrup urine disease  <response>: c. AlbinismRef: Nelsons 20e p 636-642, Ghai 8e p 653-655Intellectual disability is common in Phenylketonuria, Homocystinuria and MSUD. 