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
Sclerosing cholangitis as a side effect caused by the drug: 
Select and explain. 
A. Floxuridine, B. Carbamazepine, C. Sulfonamides, D. Indinavir
A: Floxuridine
Answer: A: Floxuridine 
Explanation: Sclerosing cholangitis develops after intrahepatic infusion of the chemotherapeutic agent floxuridine for hepatic metastases from a primary colonic carcinoma. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 2560