8. As shown, a charge particle q is inject into a space with uniform electric field E = E₀ x, where E₀ is the absolute value of the electric field and x is the unit vector along the x-axis. The initial velocity of the particle is v = v₀y, where y is the unit vector along the y-axis. A magnetic field B is applied into the same space to maintain the velocity of the particle. Which one of the following fields is the correct one?

(A) B =
(B) B =
(C) B =
(D) B =
(E) B =