Where Is the Centre of Mass of a Solid Right

Multiple Choice

Where is the centre of mass of a solid right circular cone of constant density?

A) on the axis of symmetry, 2/3 of the way from the vertex to the centre of the base
B) on the axis of symmetry, 3/4 of the way from the vertex to the centre of the base
C) on the axis of symmetry, 4/5 of the way from the vertex to the centre of the base
D) on the axis of symmetry, 5/6 of the way from the vertex to the centre of the base
E) on the axis of symmetry, 7/8 of the way from the vertex to the centre of the base