A nurse is teaching a client about causes of biliary cirrhosis. Which of the following should the nurse include in the teaching?

Biliary cirrhosis results from chronic impairment of bile flow leading to progressive hepatocellular injury. Core pathophysiology includes cholestasis, bile duct destruction, hepatic fibrosis, and bile acid accumulation, which causes inflammation and irreversible liver architecture distortion over time. Rationale: A. Excessive alcohol consumption causes alcoholic liver disease through hepatocyte toxicity and fatty infiltration, progressing to alcoholic cirrhosis. It does not primarily involve bile duct obstruction or cholestasis, making it unrelated to biliary cirrhosis pathogenesis. B. Hepatitis C leads to chronic viral hepatitis causing immune-mediated hepatocyte injury and inflammation-driven fibrosis. While it can progress to cirrhosis, it is not classified as biliary cirrhosis because bile duct obstruction is not the primary mechanism. C. Hepatotoxic medications damage hepatocytes through metabolic injury or hypersensitivity reactions leading to drug-induced liver injury. This may result in cirrhosis but does not specifically involve obstruction or destruction of bile ducts characteristic of biliary cirrhosis. D. Obstruction of the bile duct causes impaired bile drainage, leading to cholestasis, bile acid accumulation, and progressive destruction of intrahepatic bile ducts. This mechanism defines biliary cirrhosis, particularly in conditions such as primary biliary cholangitis or extrahepatic obstruction.