Which statement describes the principle of transmissibility?

• A. The moment about a point remains unchanged when shifting the force along its line of action.
• B. The effect of a force on a rigid body is independent of the point of application as long as the line of action remains the same.
• C. The resultant of two forces is obtained by head-to-tail method.
• D. Friction is always less than the force required to prevent motion.

Answer: (B)