Assertion (A) : Explosive type of volcanic eruptions are

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Assertion (A) : Explosive type of volcanic eruptions are associated with the destructive of convergent plate boundaries in which the heavier plate is subducted beneath the lighter plate.
Reason (R) : Materials of the upper mantle lying below the mid-oceanic ridges are melted and move upward in the form of lava during volcanic eruptions.
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1. Both (A) and (R) are true and (R) is the correct explanation of (A)
2. Both (A) and (R) are true but (R) is not a 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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