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
Hofmann elimination is- 
Select and explain. 
A. Inactivation of drug by metabolizing enzyme, B. Unchanged excretion by kidney, C. Excretion in feces, D. Inactivation by molecular rearrangement
D: Inactivation by molecular rearrangement
Answer: D: Inactivation by molecular rearrangement 
Explanation: Ans. is 'd' i.e., Inactivation by molecular rearrangement This refers to inactivation of the drug in the body fluids by spontaneous molecular rearrangement without the agency of any enzyme.