The SAI and FAI Receptors Have Relatively Small Receptive Fields

The SAI and FAI receptors have relatively small receptive fields with densely packed receptors, resulting in ______.

A) high spatial resolution, allowing detection exactly where on the skin a stimulation occurs
B) low sensitivity to direct pressure on the surface of the skin
C) a marked decrease in sensitivity to fine motor movements
D) low spatial resolution, creating a lack of sensation when the skin is stimulated repeatedly