Two Balls Are Dropped from a Height of 6 M

Multiple Choice

Two balls are dropped from a height of 6 m. Ball A bounces up to a height of 4 m whereas ball B bounces up to 2 m. Which ball experiences the larger impulse during its collision with the floor?

A) Ball A
B) Ball B
C) They both experience the same impulse.
D) It is impossible to tell without knowing the masses of the balls.
E) It is impossible to tell without knowing the durations of the collisions.