A 40kg box moving in the +x direction at 22m/s collides with an 80 kg object going in the -x direction at 20m/s. Whethre they stick together or bounce off one another the total amount of momentum after collision must be A. less than the total amount of momentum before collision

B. there is no way to calculate that

C. the same as the total momentum before collision

D. more than the total amount of momentum before collision