Which of the following geological descriptions best explains the origin of the Andaman and Nicobar archipelago?

Options:

• A: They are coral atolls formed on a shallow continental shelf of the Bay of Bengal.
• B: They are entirely volcanic islands formed by a hotspot plume in the Indian Ocean.
• C: They are elevated portions of submarine mountains that represent the southward extension of the Arakan Yoma range.
• D: They are block mountains formed due to the rifting of the Indian Plate from the African Plate.

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