Positive Charge Q Is Uniformly Distributed on a Semicircular Rod $\uparrow$

Multiple Choice

Positive charge Q is uniformly distributed on a semicircular rod. What is the direction of the electric field at point P, the center of the semicircle?

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