A 5.0-nC charge is at (0, 0) and a -4.25-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge from infinity to point (0, 4.0 m)? 0 3.6 x 10 - 9 J O 7.7 x 10-9 J 1.5 x 10-8 J 1.1 x 10-8 J