If a proton is moving at a speed of 5 m/s to the right (-->) through a uniform magnetic field that points to the left (<--), which of the following describes the force the proton feels?

The proton feels a force pushing it upward

The proton feels a force pushing it downward

The proton feels a force pushing it to the right

The proton feels a force pushing it to the left

The proton feels zero force