Which Statement Concerning Graded Potentials Is True

Multiple Choice

Which statement concerning graded potentials is true?

A) They are equivalent to the resting potential of the cell membrane.
B) They travel long distances to generate an action potential.
C) They are important in all sensory systems except neuromuscular junctions.
D) They allow a cell to integrate inputs and respond proportionally.
E) They are caused by ionic currents spreading over long distances.