The Magnetic Field in a Cyclotron Is 0 $\times$ 107 M/s in a Plane Perpendicular to the Field

The magnetic field in a cyclotron is 0.50 T.Find the magnitude of the magnetic force on a proton with velocity of 1.0 $\times$ 107 m/s in a plane perpendicular to the field.

A) 6.0 $\times$ 10^-14 N
B) 6.0 $\times$ 10^-13 N
C) 8.0 $\times$ 10^-14 N
D) 8.0 $\times$ 10^-13 N