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
[{'content': 'Drug of choice for Neutropenia due to cancer chemotherapy: \nSelect and explain. \nA. Vitamin B-12, B. IL 11, C. Filgrastim, D. Erythopoie tin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Filgrastim', 'role': 'assistant'}]