How Can the Nervous System Represent Increases in the Intensity

Multiple Choice

How can the nervous system represent increases in the intensity of a stimulus?

A) By increasing the number of neurons firing and the frequency of firing in each neuron.
B) Only by an increase in the number of neurons being fired.
C) Only by an increase in the frequency of firing in each neuron.
D) Only by an increase in the size of the action potential in each neuron that fires.