Three Equal Positive Charges Are Placed on the X-Axis,one at the Origin,one

Multiple Choice

Three equal positive charges are placed on the x-axis,one at the origin,one at x = 4 m,and the third at x = 7 m.Of the following points,which has the greatest magnitude electric field?​

A) x = 3 m
B) x = 5.5 m
C) x = 8 m
D) The electric field has the same magnitude at all three positions.
E) ​x = 0 m