This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
The group of drugs used as subsidiary medicines in cancer treatment? 
Select and explain. 
A. Amefostine, B. Filgrastim, C. Cytochalasin, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: The above-given drugs are considered as cancer Protectants. Cytochalasin is a migrostatic or anti-metastatic drug.Ref: Sharma and Sharma 2nd e/pg 858.