In which configuration is the electric field at P pointed at the midpoint between two of the charges?

Question

The following configurations of electric charges are located at the vertices of an equilateral triangle. Point P is equidistant from the charges.

In which configuration is the electric field at P pointed at the midpoint between two of the charges?

(A) A 

(B) B 

(C) C 

(D) D 

(E) E

Answer 1

The correct option is: (C) C 

Explanation:

D and E are not symmetric so the field will not point at the midpoint of any side. The field in choice B points at the bottom charge