In a molecule of sulfur dioxide, SO₂, each sulfur–oxygen bond is polar. Which statement correctly assigns the partial charges in one S–O bond?
a) Sulfur carries δ− and oxygen carries δ+.
b) Sulfur carries δ+ and oxygen carries δ−.
c) Both sulfur and oxygen carry δ− partial charges.
d) No partial charges develop because sulfur and oxygen have identical electronegativity.