In the Sodium Chloride Unit Cell, the Chloride Ions Form

In the sodium chloride unit cell, the chloride ions form a cube in which each side is arranged as in the following figure.The circles represent the positions of the chloride ions on one square face of the cube.All the other faces are the same.What is the name of this unit cell?

A) cubic
B) simple cubic
C) face-centered cubic
D) x-face cubic
E) body-centered cubic