A Batter Hits a 0

A batter hits a 0.140-kg baseball that was approaching him at 40.0 m/s and, as a result, the ball leaves the bat at 30.0 m/s in the direction of the pitcher. What is the magnitude of the impulse delivered to the baseball?

A) 9.80 Ns
B) 1.40 Ns
C) 5.60 Ns
D) 4.90 Ns
E) 7.00 Ns