As Hubel and Weisel Discovered, Orientation Cells Are Arranged in Such

As Hubel and Weisel discovered, orientation cells are arranged in such a way that each section of cortex includes a column made up of a complete 360-degree set of orientation cells. These columns are about a distance of ______.

A) 0.2-0.5 mm
B) 0.3-0.6 mm
C) 0.4-0.8 mm
D) 0.5-1.0 mm