A 1700 Kg Car Travels at 20 M/s WEST and Collides

Multiple Choice

A 1700 kg car travels at 20 m/s WEST and collides with a 2000 kg car traveling EAST. The collision is completely inelastic and they both come to rest. What was the velocity of the 2000 kg car?

A) 17 m/s EAST
B) 14 m/s EAST
C) 17 m/s WEST
D) 14 m/s WEST
E) 12 m/s EAST