Which object has the greatest kinetic energy?
A. An object with a mass of 4 kg and a speed of 5 m/s
B. An object with a mass of 5 kg and a speed of 4 m/s
C. An object with a mass of 3 kg and a speed of 6 m/s
D. An object with a mass of 6 kg and a speed of 3 m/s