The Area Vector for a Flat Surface

Multiple Choice

The area vector for a flat surface:

A) is parallel to the surface and has a magnitude equal to the length of a side of the surface.
B) is perpendicular to the surface and has a magnitude equal to the length of a side of the surface.
C) is parallel to the surface and has a magnitude equal to the area of the surface.
D) is perpendicular to the surface and has a magnitude equal to the area of the surface.
E) none of the above.