Suppose you repeatedly tapped the siphon of an Aplysia and observed a gradual decrease in its gill withdrawal response. You could rule out sensory adaptation as an account of these response decrements by
A. showing that a full gill withdrawal response if produced by tapping the mantle
B. showing that the number of neural impulses in the sensory neurons connected to the siphon are not changed by repeated stimulation of the siphon
C. showing that the number of neural impulses in the motor neurons connected to the gill are not changed by repeated stimulation of the siphon
D. all of the above