An Electron Moving Along the +X-Axis with Velocity V Enters

An electron moving along the +x-axis with velocity v enters a region where there is a uniform magnetic field B along the +y-axis. As the electron moves through this region, it is

A) deflected in the positive y direction.
B) deflected in the positive z direction.
C) deflected in the negative y direction.
D) deflected in the negative z direction.
E) undeviated in its motion.