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
Most common phase II drug metabolizing reaction is: 
Select and explain. 
A. Glucuronidation, B. Acetylation, C. Oxidation, D. Glutathione conjugation
A: Glucuronidation
Answer: A: Glucuronidation 
Explanation: - Glucuronidation

   Carried out by UDP - Glucuronosyltransferase.
   Results in increased molecular weight of the drug.
   Helps in excretion in bile.