Which Statement Best Describe the Structure of a Carbonate Anion

Which statement best describe the structure of a carbonate anion?

A) The electron geometry of carbon in a carbonate anion is trigonal planar with a sp² hybridization and bond angles are 120°. There is a π-bond formed between a non-hybridized "C" p-orbital overlapping with an "O" p-orbital.
B) The electron geometry of carbon in a carbonate anion is trigonal planar with a sp² hybridization and bond angles are <120°. There is a π-bond formed between a non-hybridized "C" p-orbital overlapping with an "O" p-orbital.
C) The electron geometry of carbon in a carbonate anion is trigonal planar with a sp² hybridization and bond angles are <120°. There is a π-bond formed between a hybridized "C" p-orbital overlapping with an "O" p-orbital.