For the Case of a Static Frictional Force on a Body

Multiple Choice

For the case of a static frictional force on a body, all of the following are characteristic except

A) it requires another force on the same body directed other than along the axis of the static frictional force itself.
B) it is generated by the application of a force directed opposite to the direction of the frictional force itself.
C) it has a magnitude independent of the area of the surface in contact.
D) it requires motion of the body.