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 drug is metabolized through Glycination 
Select and explain. 
A. Benzodiazepines, B. Atzanavir, C. Ifosfamide, D. Nicotinic acid
D: Nicotinic acid
Answer: D: Nicotinic acid 
Explanation: Benzadiazepines → Glucorinidation
Atzanavir → Glucorinidation
Ifosfamide → Glutathionation
Nicotinic acid → Glycination
(Hint: NICotinic acid - glyCINation).