In General, Any Surface Exerts Two Forces on Objects That

Multiple Choice

In general, any surface exerts two forces on objects that are in contact with it.One force is parallel to the surface and the other is perpendicular to the surface.What are these forces called?

A) The parallel force is surface tension and the perpendicular force is friction.
B) The parallel force is the normal force and the perpendicular force is friction.
C) The parallel force is friction and the perpendicular force is surface tension.
D) The parallel force is friction and the perpendicular force is the normal force.
E) The parallel force is static friction and the perpendicular force is kinetic friction.