The correct option is D Both A and B
Acetylcholinesterase is the hydrolase enzyme involved in the breakdown of acetylcholine. This enzyme is present in the synaptic cleft and breaks down acetylcholine into choline and acetate. These inactive metabolites can then re-cycle acetylcholine after diffusing back into the pre-synaptic membrane. Sarin is an example of a cholinesterase inhibitor which prevents hydrolysis of acetylcholine.
So, the correct option is option D.