Resonance in carbonate ion `(CO_(3)^(2-))`is

Which of the following is true?

Options

A. All these structures are in dynamic equilibrium with each other.
B. Each structure exists for equal amount of time
C. `CO_(3)^(2-)` - has a single structure i.e.,resonance hybrid of the above three structures.
D. It is possible to identify each structure individually by some physical or chemical method.

Answer

C