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What is the correct answer?

4

According to Law of Triangle of Forces

A. Three forces acting at a point, can be rep-resented by the sides of a triangle, each side being in proportion to the force

B. Three forces acting along the sides of a triangle are always in equilibrium

C. If three forces acting on a, point can be represented in magnitude and direction, by the sides of a triangle taken in order, these will be in equilibrium

D. If the forces acting on a particle be represented in magnitude and direction by the two sides of a triangle taken in order, their resultant will be represented in magnitude and direction by the third side of the triangle, taken in opposite order