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: Pharmacology
Skin pigmentation occurs with which of the following drugs ? a) Clofazimine b) Minocycline c) Sulfonamides d) Gold e) Rifampicin 
Select and explain. 
A. bde, B. acd, C. ace, D. abd
D: abd
Answer: D: abd 
Explanation: None