Correct Answer - c
If electric field due to charge `|q|` at origin is `E` then field due to charges `|2q|, |3q|, |4q|` and `|5q|` are respectively `2E, 3E, 4E` and `5E`
`E_((i))= sqrt((5E)^(2)+(5E)^(2))=5sqrt(2)E`,
`E_((ii))= sqrt((3E)^(2)+(3E)^(2))=3sqrt(2)E`,
`E_((iii))= 4E+2E= 6E` and `E_((iv))= 3E+E= 4E`
`implies E_((i))gtE_((iii))gtE_((ii))gtE_((iv))`