The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 65-year-old man comes to the physician because of a 1-week history of yellowish discoloration of his skin and generalized pruritus. Examination shows jaundice of the skin and scleral icterus. Urinalysis shows an elevated concentration of bilirubin and a low concentration of urobilinogen. Which of the following is the most likely underlying cause of these findings?   (A) Absent UDP-glucuronosyltransferase activity   (B) Increased hemoglobin breakdown   (C) Increased intestinal bilirubin reabsorption   (D) Defective hepatic bile excretion
['(D) Defective hepatic bile excretion <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Absent UDP-glucuronosyltransferase activity \n (B) Increased hemoglobin breakdown \n (C) Increased intestinal bilirubin reabsorption \n (D) Defective hepatic bile excretion <> possible answers', '  A 65-year-old man comes to the physician because of a 1-week history of yellowish discoloration of his skin and generalized pruritus. Examination shows jaundice of the skin and scleral icterus. Urinalysis shows an elevated concentration of bilirubin and a low concentration of urobilinogen. Which of the following is the most likely underlying cause of these findings? <> context@']