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: Biochemistry
[{'content': 'The process which occurs over cytidine residuces and often results in gene inactivation is \nSelect and explain. \nA. Gene rearrangement, B. Pseudogene formation, C. Histone acetylation, D. DNA Methylation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mnemonic: DNA Methylation mates the DNA Mute.\nRefer the byte " Post transcriptional modification"', 'role': 'assistant'}]