Long-Term Use of a Receptor Agonist Can Lead To

Long-term use of a receptor agonist can lead to:

A) Adaptation of the post-synaptic neuron yielding creation of less receptor density (desensitization)
B) Adaptation of the post-synaptic neuron yielding increased cell messenger production
C) Down regulation yielding less synaptic neurotransmitter.
D) A, B, and C
E) A and B