Which revision best corrects the errors in the given sentence?

The animals of Africa such as lions, giraffes, and elephants are surely one of the world's treasures.



A.
The animals of Africa: such as, lions, giraffes, and elephants are surely one of the world's treasures.


B.
The animals of Africa: such as, lions; giraffes; and elephants—are surely one of the world's treasures.


C.


The animals of Africa—such as lions, giraffes, and elephants—are surely one of the world's treasures.
@Dokad