I'm in dire need of some help, The first correct response receives brainlest!

A 1,000 g ball and a 100 g ball are both dropped from a tower. both balls have the same size and there is no air resitance. Which one hits the ground first?
A. The 100 g mass hits the ground first
B. The 1000 g mass hits the ground first
C. They both hit at the same time