A charge QI = 3.0x109 Coulombs located in xy plane at a coordinate of (0, 3meters) and a charge QII = -9.0x10⁹ Coulombs is located at a coordinate at (4.5meters, 0). Find the electric field at origin (0,0) A 5 N/C, 37 degrees downward with the +x axis (B) 5 N/C, 67 degrees downward with the +x axis 10 N/C, 37 degrees upward with the +x axis 10 N/C, 67 degrees upward with the +x axis