Which of the following have coral reefs ? 1. Andaman and Nicobar Islands 2. Gulf of Kachchh 3. Gulf of Mannar 4. Sunderbans Select the correct answer using the code given below.
Options
(a)1, 2 and 3 only
(b)2 and 4 only
(c)1 and 3 only
(d)1, 2, 3 and 4
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