Balls X and Y are at the same height. X is projected horizontally at the same time that Y is dropped. Y is the same size as X but has half its mass.

Ignoring air resistance, which statement is true?

A. Y will hit the ground before X.
B. Y will hit the ground after X.
C. Y will hit the ground at the same time as X.
D. The outcome can only be determined if the initial speed of X is known.

C