Which best describes the relationship between arterial blood pressure and action potential firing by the arterial baroreceptors?
A. An increase from normal pressure causes decreased action potential frequency and decreased pressure causes increased action potential frequency.
B. An increase from normal pressure has no effect on action potential frequency, but a decreased pressure increases action potential frequency.
C. An increase from normal pressure causes increased action potential frequency but a decreased pressure has no effect on action potential frequency.
D. An increase from normal pressure causes increased action potential frequency and decreased pressure causes decreased action potential frequency.