An electron is moving along +x direction with a velocity of 6 × 10⁶ ms^–1. It enters a region of uniform electric field of 300 V/cm pointing along +y direction. The magnitude and direction of the magnetic field set up in this region such that the electron keeps moving along the x-direction will be :

(1) 5 × 10^–3T, along + z-direction

(2) 3 × 10^–4T, along +z direction

(3) 3 × 10^–4 T, along –z-direction

(4) 5 × 10^–3 T, along –z-direction