Choose the only incorrect statement from the following

Options

A. the position of the centre of mass of a system of particles does not depend upon the internal forces between particles
B. The centre of mass of a solid may lie outside the body of the solid
C. A body tied to a 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.