Directions: The following items consist of two statements, one labelled as Assertion (A) and the other labelled as Reason (R). You are to examine these two statements carefully and decide if the Assertion (A) and the Reason (R) are individually true and if so, whether the reason is a correct explanation of the Assertion. Select your answer to these items using the codes given below. Assertion (A) : Explosive type of volcanic eruptions are associated with the destructive or 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-ocean ridges are melted and move upwards in the form of lava during volcanic eruptions.