If the dipole moment of $C-Cl$ bond is $1.2D$,. then the resulting value of dipole moment in meta-dichlorobenzene and ortho-dichlorobenzene are
(1) $1.2$ and $0.6$ respectively
(2) $0.6$ and $1.2$ respectively
(3) Less than $1.2D$ and more than $1.2D$ respectively
(4) More than $1.2D$ in both
