Several forces act on a rigid body. If the resultant (net) force on the body is zero, which one of the following statements must be true?
A) The object is in translational equilibrium and rotational equilibrium.
B) The object is in translational, but not necessarily rotational, equilibrium.
C) The object is in rotational, but not necessarily translational, equilibrium.
D) The object is in static equilibrium.
E) The object is in neither translational nor rotational equilibrium.