Imagine a Magnetic Field Pointing into the Plane of This

Multiple Choice

Imagine a magnetic field pointing into the plane of this page. An electron moves across the paper from left to right. The direction of the magnetic force on the electron will be

A) into the plane of the paper.
B) out of the plane of the paper.
C) in the plane of the paper and toward the top of the page.
D) in the plane of the paper and toward the bottom of the page.
E) in the plane of the paper and opposite the electron's velocity.