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: Medicine
The most common inherited disorder of cholangiocyte injury is: 
Select and explain. 
A. Cystic fibrosis, B. Dubin johnson, C. Crigler najjar type II, D. Wilson disease
A: Cystic fibrosis
Answer: A: Cystic fibrosis 
Explanation: The most common inherited disorder of cholangiocyte injury is cystic fibrosis. It affects secretory epithelia and is linked to mutations in the CFTR gene, which encodes the cystic fibrosis transmembrane conductance regulator ion channel protein. Cholestatic disease occurs in 30% of adults with this disorder. Ref:Sleisenger and Fordtran's,E-9,P-329