This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gall Bladder, Subject name: Medicine
Which of the following originates at the following site? 
Select and explain. 
A. Klatskin tumor, B. Carolicyts, C. Bryler disease, D. Primary sclerosing cholangitis
A: Klatskin tumor
Answer: A: Klatskin tumor 
Explanation: Ans. (a) Klatskin tumor.Image source - style="font-family: Times New Roman, Times, serif">