A Particle Has an Initial Velocity of 4

A particle has an initial velocity of 4.8 m/s toward the south and a final velocity of 7.1 m/s toward the east.The particle was subject to a constant acceleration for 0.25 s.The magnitude and the direction of the acceleration must have been

A) 8.6 m/s² at 34.1º north of east
B) 260 m/s² at 34.1º south of east
C) 34 m/s² at 34.1º north of east
D) 34 m/s² at 34.1º south of east
E) 8.6 m/s² at 34.1º south of east