MCSA a Student Is About to Administer an MAO Inhibitor

MCSA A student is about to administer an MAO inhibitor to her client. Her instructor asks her to identify it's mechanism of action. What is the correct response of the student ?

A) "It inhibits norepinephrine re-uptake."
B) " It Inhibit norepinephrine, serotonin, and dopamine reuptake."
C) " It's the enzyme that terminates the actions of neurotransmitters."
D) " It inhibits the amino acid tyranine.