Which Statement About Sensory Systems Is Not True

Which statement about sensory systems is not true?

A) Sensory transduction involves the conversion (direct or indirect) of a physical or chemical stimulus into changes in membrane potentials.
B) In general, a stimulus causes a change in the flow of ions across the plasma membrane of a sensory receptor cell.
C) The term "adaptation" refers to the process by which a sensory system becomes insensitive to a continuing source of stimulation.
D) The more intense a stimulus, the greater the magnitude of each action potential fired by a sensory neuron.
E) Sensory adaptation plays a role in the ability of organisms to discriminate between important and unimportant information.