Which is the correct statement about law of polygon of forces ?

A. if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium

B. a polygon taken in order, then the forces are in equilibrium

C. if a polygon representing forces acting at a point is closed then forces are in equilibrium

D. if any number of forces acting at a point can be represented by the sides

E. if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium

F. none of the above.

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