A 43-year-old man is scheduled for a liver transplant. He has been on the transplant waiting list for 5 years and has developed worsening hepatic encephalopathy over the past 2 weeks. Which of the following is the most common chronic diseases leading to liver transplant in the United States?
a. Chronic hepatitis B
b. Chronic hepatitis C
c. Biliary cirrhosis
d. Diabetic nephropathy