This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Which of the following statement is false 
Select and explain. 
A. Primary biliary cholangitis involves only intrahepatic., B. Primary biliary cholangitis is associated with rheumatoid arthritis, C. Primary sclerosing cholangitis is seen in males > females, D. Primary sclerosing cholangitis involves only extrahepatic.
D: Primary sclerosing cholangitis involves only extrahepatic.
Answer: D: Primary sclerosing cholangitis involves only extrahepatic. 
Explanation: Primary sclerosing cholangitis affects both intrahepatic and extrahepatic.