Choose the only incorrect statement from the following : (A) The position of the centre of mass ...

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Choose the only incorrect statement from the following :
(A) The position of the centre of mass of a system of particles does not depend upon the internal forces between particles.
(B) The centrie of mass of a solid may lie outside the body of the solid.
(C) A body tied to a string is whirled in a circle with a uniform speed. If the string is suddenly cut, the angular momentum of the body will not change from its initial value.
(D) The angular momentum of a comet revolving around a massive star, remains constant over the entire orbit.
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