Line segment CD is shown on a coordinate grid: A coordinate plane is shown. Line segment CD has endpoints 1 comma 2 and 1 comma negative 1.

The line segment is reflected about the y-axis to form C'D'. Which statement describes C'D'?

A) C'D' and CD are equal in length.

B) C'D' is parallel to CD.

C) C'D' is half the length of CD.

D) C'D' is greater than twice the length of CD.