Consider the following statements regarding the Andaman and the Nicobar islands and choose the correct answer:
1. The islands have nearly 450 and 13.8 square miles of mangrove forests
2. This forest develops in areas covered by brackish water at high tide such as mud-flats along tidal streams
3. The dominant family in these islands is Acanthaceae
4. The mangrove forests are largely composed of single species or a few allied species