The Diagram Shows a Particle with Positive Charge Q and a Particle

Multiple Choice

The diagram shows a particle with positive charge Q and a particle with negative charge -Q.The electric field at point P on the perpendicular bisector of the line joining them is:

A) " $\uparrow$ "
B) " $\downarrow$ "
C) " $\rightarrow$ "
D) " $\leftarrow$ "
E) "zero"