Which of the following States has the most critical problem of erosion of its coastal areas by the sea?

Kerala has the most critical problem of erosion of its coastal areas by the sea. This has been a critical issue in Kerala, where only 46.3 km of its 590 km long coastline has been demarcated as stable by the state fisheries department. Apart from the boulder walls, indiscriminate amount of sand quarrying from seashores have also been cited to play a massive role in erosion.