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
Which of the following anticancer drugs acts by hypomethylation ? 
Select and explain. 
A. Gemcitabine, B. 5–FU, C. Decitabine, D. Homoharringtonine
C: Decitabine
Answer: C: Decitabine 
Explanation: None