Two people must have the same speed and velocity if a) they are walking toward each other at 2 m/s. b) they are walking away from each other at 2 m/s. c) they are jogging side by side at 5 m/s. d) they are jogging to two different destinations.

A) they are walking toward each other at 2 m/s.
They have the same speed but opposite velocities. 

B)they are walking away from each other at 2 m/s.
They have the same speed but opposite velocities.

C)they are jogging side by side at 5 m/s.
They have the same speed AND velocity.

D)they are jogging to two different destinations.
We don't know anything about their speed or velocity.