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1. A continental plate and an oceanic plate push against each other.

2. One side of the oceanic plate goes under the continental plate, forming a trench.

3. Part of the plate that goes down melts and generates magma that reaches the surface where it can be ejected.

Which is the correct sequence in the formation of a volcano?

B. 1,2,3

C.2,1,3

A. 1,3,2

D. 3,2,1​