What is the strength of the electric field of a point charge of magnitude +6.4 x
10-19 C at a distance of 4.0 x 10-3 m?
k= 9.00 x 10°N•m²/C²)

A. -3.6 x 104 N/C
B. 3.6 x 10-4 N/C
C. 2.7 x 104 N/C
D. -2.7 x 10-4 N/C