End plate potential follows which law: (A) All or none law, (B) Depolarisation, (C) Hyperpolarisation, (D) Propagation
Answer is B. End plate potential is always depolarizing whereas post synaptic potential can be EPSP or IPSP. 
Also, remember that end plate potential is a local potential. 
So it does not follow ‘all or none’ law nor does it self-propagate. It is always decremental.