A 328-Kg Car Moving at 19

Multiple Choice

A 328-kg car moving at 19.1 m/s in the +x direction hits from behind a second car moving at 13.0 M/S. In the same direction.If the second car has a mass of 790kg. And a speed of 15.1 m/s.
Right after the collision,what is the velocity of the first car after this sudden collision?

A) 14.0 m/s
B) 18.2 m/s
C) 24.2 m/s
D) -14.0 m/s