Chemistry question AS

7 Consider the following organic liquids:
A ethanal
B ethanol
C tetrachloromethane
D trichloromethane
(a) Each liquid is run from a burette. Which liquid would not be deflected significantly by a charged rod?
A B C D

C tetrachloromethane

why?

My bad sorry I should have explained! Tetrachloromethane is not a polar molecule, it has no overall dipole, therefore it will not be deflected by a rod which is charged. However something that was polar would be deflected because of the repulsion between similar charges...if that makes sense?