In the Nervous System,which of the Following Is True of Neurons

Multiple Choice

In the nervous system,which of the following is true of neurons and the neurotransmitters they secrete?

A) Most neurons secrete many neurotransmitters at the same time.
B) At any given time,a neuron is receiving a mixture of messages from the neurotransmitters.
C) Neurotransmitters in neurons cannot be both excitatory and inhibitory.
D) Neurotransmitters are located in the nuclei of the neurons.