Three Charges Q₁, Q₂, and Q₃, Each Equal to 6

Three charges Q₁, Q₂, and Q₃, each equal to 6.4 *10^-19 C, are in a straight line. The distance between neighboring charges is 60 nm. The magnitude of the electric field at P, which is 80 nm from Q₂ on a line at right angles to the line between Q₁ and Q₃, is

A) 1.2 * 10^-8 N/C
B) 16 N/C
C) 2.0 N/C
D) 1.9 *10¹⁰ N/C
E) 1.2 *10⁸ N/C