Identify the statement that correctly describes the effects of cocaine and amphetamines on the body.

Cocaine and amphetamines increase the activity and accumulation of the neurotransmitters dopamine, epinephrine, and serotonin.
Cocaine and amphetamines produce a decrease in heart rate and blood pressure.
Cocaine and amphetamines have no effect on the body's neurotransmitters.
Cocaine and amphetamines produce a feeling of relaxation and reduced muscle contractility.
a) Cocaine and amphetamines increase the activity and accumulation of the neurotransmitters dopamine, epinephrine, and serotonin.
b) Cocaine and amphetamines produce a decrease in heart rate and blood pressure.
c) Cocaine and amphetamines have no effect on the body's neurotransmitters.
d) Cocaine and amphetamines produce a feeling of relaxation and reduced muscle contractility.