The Carbonate Ion Has the Skeletal Structure as Shown Below

The carbonate ion has the skeletal structure as shown below. Complete the Lewis structure by filling in the bonds and the remaining valence electrons which are not involved in bonds. Which statement made about the carbonate ion is true? Based on its Lewis structure, the carbonate ion should have ________ resonance hybrids and ________ atoms with formal charges on them in its structure. Hint: Consider the possible places the double bond could go when determining resonance of carbonate.

A) 2, 2
B) 3, 1
C) 3, 2
D) 2, 1
E) no, 2