[A] : Synaptic vesicles fuse with membrane and release neurotransmitter molecules.
[R]: Neurotransmitter attaches to receptor site and open sodium channels to allow so- dium to flow into post synaptic cell causing depolarisation.
A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false