CO is practically non-polar since-

Options

A. The `sigma`-electron derift from C to O is almost nullified by the `pi`-electron drift from O to C
B. The `sigma`-electron drift from O to C is almost nullified by the `pi`-electron drift from C to O
C. The bond moment is low
D. there is a triple bond between C and O

Answer

A

Explanation

Oxygen donates an unshared pair of electron to carbon and helps it to complete its octet by forming a dative `pi`-bond with it. As a result, a much stronger `pi`-moment acts from oxygen to carbon atom and this moment is almost cancelled by `sigma`-moment and the weak `pi`-moment acting in opposite direction.
Hence, the polarity of the molecule is very low.