A Particle (Mass = 6 $\degree$ Above the Positive X Axis in the Xy Plane

Multiple Choice

A particle (mass = 6.0 mg) moves with a speed of 4.0 km/s in a direction that makes an angle of 37 $\degree$ above the positive x axis in the xy plane.At the instant it enters a magnetic field of (5.0 $$\hat { \mathbf { i } }$$ ) mT it experiences an acceleration of (8.0 $\hat { k }$ ) m/s².What is the charge of the particle?

A) -4.8 $\degree$ C
B) 4.0 $\degree$ C
C) -4.0 $\degree$ C
D) 4.8 $\degree$ C
E) -5.0 $\degree$ C