Which of the Following Is True of the Process of Sensory

Which of the following is true of the process of sensory transduction?

A) Receptors show action potentials to external stimuli.
B) The intensity of an external stimulus is related to the firing rate of the receptor.
C) Receptors convert an external energy into graded changes in receptor membrane potential.
D) Most receptors show an action potential when stimulated with an external stimulus.
E) Transduction refers to the speed at which a sensory message travels toward the brain.