The Rotational Inertia of a Solid Uniform Sphere About a Diameter

Multiple Choice

The rotational inertia of a solid uniform sphere about a diameter is (2/5) MR², where M is its mass and R is its radius.If the sphere is pivoted about an axis that is tangent to its surface, its rotational inertia is:

A) MR²
B) (2/5) MR²
C) (3/5) MR²
D) (5/2) MR²
E) (7/5) MR²