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
Drug (s) used in the treatment of multiple myeloma is/are -a) Bortezomibb) Melphalanc) Hydroxyoread) Ketoconazolee) Cyclophosphamide 
Select and explain. 
A. abc, B. abe, C. cde, D. acd
B: abe
Answer: B: abe 
Explanation: None