Which molecule is non-polar?

A.     ${\text{CC}}{{\text{l}}_{\text{4}}}$

B.     ${\text{C}}{{\text{H}}_{\text{2}}}{\text{C}}{{\text{l}}_{\text{2}}}$

C.     ${\text{C}}{{\text{H}}_{\text{3}}}{\text{Cl}}$

D.     CO

A

The most common misconception was that CO is non-polar.