Which sentence shows an example of allusion?
A.
Macy couldn't help but notice everyone looking at her as she walked down the hall.
B.
Therefore, all of her classmates were astonished by her Rapunzel-like transformation.
C.
The wigs helped boost confidence during such difficult times.
D.
Although it was normal for girls to have long hair, Macy had always had short hair and refused to grow it out.