This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antibiotics, Subject name: Pharmacology
A drug used in steroid-resistant lepra reactions? 
Select and explain. 
A. Clofazamine, B. Dapsone, C. Rifampicin, D. Thalidomide
D: Thalidomide
Answer: D: Thalidomide 
Explanation: Thalidomide is the drug used in steroid-resistant type 2 lepra reactions.Ref: KD Tripathi 3rd ed; P: 756