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
Histone has post - translational modification by all/except. 
Select and explain. 
A. Acylation, B. Methylation, C. Phosphorylation, D. Glycosylation
D: Glycosylation
Answer: D: Glycosylation 
Explanation: D i.e. Glycosylation