Michelle Kwan, the American Figure Skater, Is Spinning on Ice

Michelle Kwan, the American figure skater, is spinning on ice with her arms extended. She then draws her arms in and crosses them in front of her chest. If the external force of the ice on her blades is negligible, how does her angular momentum change when she brings in her arms?

A) It increases.
B) It decreases.
C) It remains the same.
D) It decreases as she draws her arms in, but then returns to the initial value once she has crossed them.
E) It increases as she draws her arms in, but then returns to the initial value once she has crossed them.