A figure skater is spinning slowly with arms outstretched. She brings her arms in close to her body and her moment of inertia decreases by 1/2. Her angular speed increases by a factor of

A) 2.

B) 4.

C) .

D) 1

E) 1/2.

A) 2.

B) 4.

C) .

D) 1

E) 1/2.