Experimentally, to Differentiate Rapidly Adapting Receptors from Slowly Adapting Receptors

Experimentally, to differentiate rapidly adapting receptors from slowly adapting receptors would be to determine

A) the peak of the electrical potentials in the response.
B) if the preparation is responding by firing action potentials or excitatory/inhibitory postsynaptic potentials.
C) the relative frequency and pattern (start strong, end weak) of action potentials for the duration of the stimulus.
D) the relative frequency and pattern of excitatory/inhibitory postsynaptic potentials for the duration of the stimulus.
E) whether action potentials are firing when the stimulus starts and then cease when the stimulus ends.