An Electron Moves Through a Region of Crossed Electric and Magnetic

An electron moves through a region of crossed electric and magnetic fields.The electric field E = 2 000 V/m and is directed straight down.The magnetic field B = 0.80 T and is directed to the left.For what velocity v of the electron into the paper will the electric force exactly cancel the magnetic force?

A) 2 500 m/s
B) 4 000 m/s
C) 5 000 m/s
D) 8 000 m/s