Two Cannonballs Are Dropped from a Second Floor Physics Lab $\frac{h}{4}$

Multiple Choice

Two cannonballs are dropped from a second floor physics lab at height h above the ground. Ball B has four times the mass of ball A. When the balls pass the bottom of a first floor window at height $\frac{h}{4}$ above the ground, the relation between their kinetic energies, KA and KB, is:

A) KA = 4KB.
B) KA = 2KB.
C) KA = KB.
D) KB = 2KA.
E) KB = 4KA.