A Charged Particle (Mass = 4 $\mu$ G, Charge = 5 $\mu$

Multiple Choice

A charged particle (mass = 4.0 $\mu$ g, charge = 5.0 $\mu$ C) moves in a region where the only force on it is magnetic.What is the magnitude of the acceleration of the particle at a point where the speed of the particle is 5.0 km/s, the magnitude of the magnetic field is 8.0 mT, and the angle between the direction of the magnetic field and the velocity of the particle is 60 $\degree$ ?

A) 39 km/s2
B) 43 km/s2
C) 48 km/s2
D) 52 km/s2
E) 25 km/s2