This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Pharmacology
[{'content': 'Which of the following is not an example of Phase II drug metabolic reaction? \nSelect and explain. \nA. Acetylation, B. Sulfation, C. Decyclization, D. Methylation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: phase 1 reactions- oxidation, reduction, cyclization, decyclization and hydrolysis Phase II reactions: 1. Glucuronidation 2. Acetylation 3. Glutathione conjugation 4. Glycine conjugation 5. Sulfation 6. Methylation 7. Water conjugation Reference: Katzung Pharmacology; 13th edition; Chapter 4; Drug Biotransformation', 'role': 'assistant'}]