This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Drugs used in the treatment of pruritus in PBC 
Select and explain. 
A. Rifampicin, B. Naltrexone, C. Cholestyramine, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: .