Volcanic arcs, either normal or island, are volcanic zones created by what?
A. Two plates made of different chemical make up combine and cause a chemical reaction, increasing heat to produce a pocket of lava under ground
B. Two plates rub against one another, producing enough friction to heat a pocket of lava on the surface
C. Subduction of a tectonic plate creates large chambers and plumes of lava that are pushed upward to produce volcanoes
D. Colliding plates cause explosions, which produce the volcanoes by the shockwave on the surface