An office manager needs to cover the front face of a rectangular box with a label for shipping. The vertices of the face are (–6, 5), (6, 5), (–6, –4), and (6, –4). What is the area, in square inches, of the label needed to cover the face of the box?
A: 54 in2
B: 72 in2
C: 108 in2
D: 144 in2