Magnitude of an electric field at two points

[zeroeclipse]

Homework Statement

Compare the magnitude of the electric field at position A with the magnitude of the electric field at position B.

A) E-Field Magnitude at Point A > E-Field Magnitude at Point B
B) E-Field Magnitude at Point A = E-Field Magnitude at Point B
C) E-Field Magnitude at Point A < E-Field Magnitude at Point B

Homework Equations

The Electric Field:
http://imageshack.us/f/407/efield.jpg/

The Attempt at a Solution

I thought the electric field at A would be stronger because its closer to the charge causing the field, but I got it marked wrong. Can someone explain to me what is the correct answer?

 

[BruceW]

On these types of diagram, what indicates the strength of the electric field?