Which Is True of Neurotransmitters

Multiple Choice

Which is true of neurotransmitters?

A) They increase the negative charge of the neuron, making it more likely for the neuron to become active.
B) GABA is a major excitatory neurotransmitter.
C) Only excitatory neurotransmitters can be affected by psychotropic medications.
D) Inhibitory neurotransmitters make it less likely that the neuron will become active.