An Electron Is Initially Moving to the Right When It $( \mathbf { X } , \mathbf { Y } , \mathbf { Z }$

An electron is initially moving to the right when it enters a uniform electric field directed upwards, as shown in the figure. Which trajectory $( \mathbf { X } , \mathbf { Y } , \mathbf { Z }$ , or $\mathbf { W } )$ will the electron follow in the field?

A) trajectory W
B) trajectory $\mathbf { X }$
C) trajectory Y
D) trajectory $Z$