When Comparing Action Potentials to Graded Potentials, An/two Important Distinguishing

Multiple Choice

When comparing action potentials to graded potentials, an/two important distinguishing characteristic/s is/are

A) graded potentials can undergo summation.
B) action potentials can undergo summation.
C) that the rate of action potentials is limited by the refractory period.
D) graded potentials can undergo summation and the rate of action potentials is limited by the refractory period.
E) action potentials can undergo summation and the rate of action potentials is limited by the refractory period.