With reference to Floreana Island, often mentioned in news, consider the following statements:
- It is the largest and most volcanically active island in the Galápagos Archipelago.
- The island is known for a historic barrel mail system that originated in the 18th century.
- Of all the Galápagos Islands, it has the highest concentration of species threatened by invasive mammals.
Which of the statements given above is/are correct?