Synapse A has a large pool of vesicles and a low probability of vesicle release. Synapse B has a small pool of vesicles and a high probability of vesicle release. The synapses are bathed in an extracellular solution containing a low concentration of calcium. When 2 action potentials arrive at these synapses in quick succession, what will the responses look like in each postsynaptic cell (presume these are glutamatergic synapses)? .