" In a permanent magnet at room temperature "

In a permamnent magnet at room temperature

A permanent magnet attracts

A permanent magnet attracts

A permanent magnet attracts

Permanent magnets show

Identify the option where all four molecules posses permanent dipole moment at room temperature

Each of the following options contains a set of four molecules. Identify the option(s) where all four molecules possess permanent dipole moment at room temperature.