Refer to the Figure Shown

Refer to the figure shown.
If the top panel (activity trace) of the figure is the result of light shining in the center of the receptive field, which of the following is true?

A) The entire receptive field has been inhibited.
B) Central illumination has increased activity.
C) This is likely an off-center cell response.
D) This is likely an on-center cell response.