which statement about neurotransmitters and medications is true?

A- natural neurotransmitters such as endorphins have been discovered after the development of medications

B-Some medications were developed after the discovery and known action of the neurotransmitters in the brain

C- Neurotransmitters receive messages from most medications

D the neurotransmitter serotonin is directly linked to depression. Following this discovery, the antidepressant prozac was developed