The diagram depicts an insulating rod with equal and opposite point charges at its two ends. An electric field of strength $E$ acts on the rod downward. Which row is correct?
- Aresultant force: zero; resultant torque: clockwise
- Bresultant force: downwards; resultant torque: clockwise
- Cresultant force: zero; resultant torque: anti-clockwise
- Dresultant force: downwards; resultant torque: anti-clockwise