What Is Wrong with the Lewis Structure Shown for Sulfur

What is wrong with the Lewis structure shown for sulfur trioxide, SO₃?

A) Oxygen, not sulfur, should be the central atom.
B) Sulfur should have 10 electrons around it instead of 8, to show its expanded octet.
C) The structure shows 26 valence electrons, but there should only be 24.
D) There are too many bonding electrons shown.
E) The structure should show each oxygen atom with a double bond to the sulfur atom.