Neurotransmitter substance

A) leaves the presynaptic neuron, activates ion channels, and enters the postsynaptic neuron.
B) leaves the presynaptic neuron, activates ion channels, and then is reabsorbed into the presynaptic neuron.
C) leaves the presynaptic neuron, activates ion channels, and then is absorbed into the lymphatic system.
D) leaves the postsynaptic neuron, activates ion channels, and then is absorbed into the presynaptic neuron.

B