Which of the following has the greatest momentum?

a) turtle with a mass of 100 kg moving at a velocity of 1.0 m/s

b) tortoise with a mass of 300 kg moving at a velocity of 0.5 m/s

c) roadrunner with a mass of 2 kg moving at a velocity of 7 m/s

d) hare with a mass of 200 kg moving at a velocity of 7 m/s