Depolarisation of post synaptic membrane by opening of K+ channels
B
Hyperpolarisation of post synaptic membrane by opening of Cl- channels
C
Depolarisation of post synaptic membrane by opening of Ca2+ channels
D
Hyperpolarisation of post synaptic membrane by opening of Na+ channel
High-Yield Explanation
EPSP: Depolarisation of post synaptic membrane by opening of Na+ or Ca2+ channels
IPSP : Hyperpolarisation of post synaptic membrane by opening of Cl- or K+ channels