A 21-year-old man presents with intermittent scleral icterus exacerbated by fasting and stress. Vital signs: BP 118/76, HR 82, RR 16, Temp 37°C, SpO2 98%. He denies abdominal pain and reports no weight loss. Physical examination reveals mild jaundice without hepatomegaly or splenomegaly. Laboratory studies show total bilirubin 3.2 mg/dL with unconjugated predominance; AST, ALT, and alkaline phosphatase are normal. Hemoglobin 14.2 g/dL. Which of the following is the most likely diagnosis?

1. A)Acute viral hepatitis
2. B)Choledocholithiasis
3. C)Gilbert syndromeGABARITO
4. D)Dubin-Johnson syndrome
5. E)Crigler-Najjar syndrome type I