Mangroves are salt-tolerant plants of tropical and sub-tropical intertidal regions of the world. They are highly productive but extremely sensitive and fragile. Which of the following statements are true regarding them?

• A. The presence of mangrove ecosystem on coastline saves lives and property during natural hazards such as cyclones and storm surges.
• B. They are breeding, feeding and nursery grounds for many estuarine and marine organisms.
• C. West Bengal has maximum percentage of mangrove cover in India.
• D. All of these