In the Context of the Various Neurotransmitters of the Brain

In the context of the various neurotransmitters of the brain, identify a true statement about glutamate.

A) It facilitates the migration of neurons to different sites in the brain.
B) It reduces some neural transmission so that a person is unable to tell the difference between important and less important information.
C) It slows autonomic nervous system activity.
D) It is a major inhibitory neurotransmitter that tells postsynaptic neurons not to fire.