A Person Sits on a Freely Spinning Lab Stool (No

Multiple Choice

A person sits on a freely spinning lab stool (no friction) . When this person extends her arms,

A) her moment of inertia decreases and her angular velocity increases.
B) her moment of inertia decreases and her angular velocity decreases.
C) her moment of inertia increases and her angular velocity increases.
D) her moment of inertia increases and her angular velocity decreases.
E) her moment of inertia increases and her angular velocity remains the same.