A dipole of dipole moment $\overrightarrow{\mathrm{p}}={\mathrm{p}}_0\hat{\mathrm{j}}$ is placed at point (1, 0). There exists an electric field $\overrightarrow{\mathrm{E}}=2{\mathrm{ax}}^2\hat{\mathrm{i}}+\left(2{\mathrm{by}}^2+2\mathrm{cy}\right)\hat{\mathrm{j}}$.Then 

Torque on dipole about its centroidal axis is zero.

force on dipole is $\mathrm{p}(2\mathrm{c}+4\mathrm{bl})\hat{\mathrm{j}}$.

force on dipole is $2{\mathrm{p}}_0\mathrm{c}\hat{\mathrm{j}}$.

Torque on dipole about its centroidal axis is $2{\mathrm{p}}_0\mathrm{a}\hat{\mathrm{k}}$.