Sort the following events in a sequence that would lead to long-term potentiation (LTP). Your answer would be a five-digit number composed of numbers 1 to 5 only, e.g. 13245.
(A) Activation of AMPA receptors
(B) Glutamate release into the synaptic clefts
(C) Activation of calcium-dependent protein kinases in the postsynaptic cell
(D) Postsynaptic membrane depolarization
(E) Activation of NMDA receptors