Due to Electron Delocalization,one Would Predict That the Carbon-Oxygen Bond

Multiple Choice

Due to electron delocalization,one would predict that the carbon-oxygen bond in acetamide,CH₃CONH₂

A) is nonpolar.
B) has more double bond character than the carbon-oxygen bond of acetone,(CH₃) ₂CO.
C) is longer than the carbon-oxygen bond of dimethyl ether,(CH₃) ₂O.
D) is longer than the carbon-oxygen bond of acetone,(CH₃) ₂CO.
E) is formed by overlapping sp³ orbitals.