An Object Moves at a Constant Velocity of 12 M/s

Multiple Choice

An object moves at a constant velocity of 12 m/s to the southwest for an interval of 20 s.Halfway through this interval,what is the magnitude of its instantaneous velocity?

A) It can be any value from 0 to 24 m/s.
B) 6 m/s
C) 12 m/s
D) More information is needed.