A 27-year-old woman presents with chronic mild jaundice noted on routine examination. Vital signs are stable: BP 118/76 mmHg, HR 82 bpm, RR 16/min, temp 37°C, SpO2 98%. Laboratory studies show conjugated hyperbilirubinemia of 3.2 mg/dL with normal alkaline phosphatase and transaminases. Abdominal ultrasound shows no biliary obstruction or cirrhosis. Liver biopsy reveals coarse brown-black pigment within hepatocytes. She takes no medications. Which diagnosis best explains these findings?

1. A)Gilbert syndrome
2. B)Primary biliary cholangitis
3. C)Dubin-Johnson syndromeGABARITO
4. D)Rotor syndrome with black liver pigmentation
5. E)Crigler-Najjar syndrome