The assembly of two charges below contributes to the electric field at point p in the image. Calculate the electric field at point p, giving the result using components. 

• A. (-10 i + 0.4 j) kN/C
• B. (-20 i + 9 j) kN/C
• C. ​(-20 i + 0.4 j) kN/C​
• D. (-10 i + 9 j) kN/C

Answer: (C)