A Beam of Electrons Is Sent Horizontally Down the Axis

Multiple Choice

A beam of electrons is sent horizontally down the axis of a tube to strike a fluorescent screen at the end of the tube.On the way, the electrons encounter a magnetic field directed vertically downward.The spot on the screen will therefore be deflected:

A) upward
B) downward
C) to the right as seen from the electron source
D) to the left as seen from the electron source
E) not at all