<prompt> Which one of the following inherited conditions causes direct hyperbilirubinemia?Gilbert syndromeType II Crigler-Najjar syndromeRotor syndromeType I Crigler-Najjar syndrome  <response>: C. Rotor syndromeRef: Nelsons 20e p 1937-1939Disorders of bilirubin metabolismType of bilirubin elevatedDiseasesUnconjugated HyperbilirubinemiaCrigler-Najjar syndrome Types I and II UDP GT gene mutation Gilbert disease UPD GT polymorphismConjugated HyperbilirubinemiaDubin-Johnson syndrome multiple drug-resistant protein 2 mutation Rotor syndrome deficiency in organic anion uptakeUnlike Dubin-Johnson syndrome, in Rotor syndrome:Total urinary coproporphyrin excretion is elevated, with a relative increase in coproporphyrin I isomerGallbladder is normal by roentgenography and Liver cells contain no black pigment. 