Consider this scenario: A neuroscientist has identified a compound that disrupts signaling in the synaptic cleft between preganglionic and postganglionic neurons that use acetylcholine as a neurotransmitter. At this point it is unclear how this compound works, we only know that treatment with this compound PREVENTS the postganglionic neuron from propagating an action potential. Consider what you have learned about how acetylcholine acts as a neurotransmitter. Provide two possible targets upon which this drug could act to cause this effect. In other words, what are two possible mechanisms by which this compound could disrupt acetylcholine signaling in the synaptic cleft? Be sure to state how a disruption at each of these points you indicate would interfere with acetylcholine signaling