An Electron Moving with a Velocity = 5

An electron moving with a velocity = 5.0 × 10⁷ m/s
Enters a region of space where perpendicular electric and a magnetic fields are present.The electric field is
=
) What magnetic field will allow the electron to go through the region without being deflected?

A) = +2.0 × 10^-4 T

B) = -2.0 × 10^-4 T

C) = +2.0 × 10^-4 T

D) = -2.0 × 10^-4 T

E) = +5.0 × 10^-4 T