What are the Two Major/most Common Neurotransmitters in the Vertebrate

Question

What are the two major/most common neurotransmitters in the vertebrate CNS?
A) GABA and acetylcholine
B) Glycine and acetylcholine
C) GABA and glutamate
D) GABA and glycine

Accepted Answer

Although acetylcholine and glycine are neurotransmitters in the vertebrate CNS, GABA, and glutamate are the two most common transmitters.