To be super pedantic the Mini 2 is not classed as C0.
There are currently no C0 drones (or C1, or C2 or C anything).
The Mini 2 (like all drones currently on sale) is a legacy drone.
If it's under 250g weight at the time it is flown, it can be flown **as if** it were a C0 (not a toy) drone and...