Some insecticides, such as chlorpyrifos, work by inhibiting the enzyme acetylcholinesterase (AChE), which normally breaks down the neurotransmitter acetylcholine. Where does this insecticide most likely bind to inhibit the enzyme's activity?

A)Any location on the amino acid chain that forms the AChE enyzme
B)A sequence of DNA nucleotides that encodes the AChE enzyme protein molecule
C)It does not need to bind with the enzyme directly
D)The part of an enzyme that combines with acetlycholine