A 43-year-old woman comes to the physician because of a 1-week history of abdominal pain, nausea, vomiting, itching, and fatigue. Physical examination shows scleral icterus and right upper quadrant abdominal tenderness. There is no rash. Abdominal ultrasonography shows a large stone in the common bile duct. Complete blood count with differential shows no abnormalities. Serum total bilirubin concentration is marked increased. The serum concentration of which of the following is most likelv to be markedly increased? A) Acid phosphatase B) ALT C) Alkaline phosphatase D) AST E) Lactate dehydrogenase F) Unconjugated bilirubin