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
[{'content': 'The group of drugs used as subsidiary medicines in cancer treatment? \nSelect and explain. \nA. Amefostine, B. Filgrastim, C. Cytochalasin, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: 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.', 'role': 'assistant'}]