The Inevitable "Crash" That Occurs When Heavy Users of Amphetamines

Multiple Choice

The inevitable "crash" that occurs when heavy users of amphetamines stop taking the drug happens because

A) without the drug, levels of dopamine in the synapse remain too high
B) the neuron's supplies of norepinephrine and dopamine have become depleted
C) the compensatory response induced by high levels of GABA produces withdrawal symptoms
D) the inhibitory control centres in the cerebral cortex have been over-stimulated