Which Statement Best Describes How Frontal Eye Field (FEF) Activity

Which statement best describes how frontal eye field (FEF) activity and covert voluntary attention?

A) FEF neuron activity is solely dependent on premotor activity when a stimulus is in their receptive field
B) FEF neuron activity decreases as covert attention is directed to a stimulus in their receptive field
C) FEF neuron activity increases as covert attention is directed to a stimulus in their receptive field
D) FEF neuron activity is unchanged as covert attention is directed to a stimulus in their receptive field