Polarization of electrons in acrolein may be written as:
A. `H_(2)overset(delta^(-))C=overset(delta^(+))C-CH=O`
B. `H_(2)overset(delta^(-))C=CH-CH=overset(delta^(-))O`
C. `H_(2)overset(delta^(-))C=CH-overset(delta^(-))CH=O`
D. `H_(2)overset(delta^(-))C=CH-CH=overset(delta^(-))O`
