Assertion (A) : In the deep ocean, primary production occurs

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Assertion (A) : In the deep ocean, primary production occurs near hydrothermal vents.
Reason (R) : Over there, microbes produce food through chemosynthesis which forms the basis for a food-chain.
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1. Both (A) and (R) are individually true and (R) is the correct explanation of (A)
2. Both (A) and (R) are individually true but (R) is not the correct explanation of (A)
3. (A) is true but (R) is false
4. (A) is false but (R) is true

Correct Option: B

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