Step 1. A rock deep in the earth melted. Step 2. The melted rock cooled and became solid rock. Step 3. Wind and water broke and moved pieces of this rock. Some of the pieces are now in the river shown in this picture. Which of the answer choices below (A-D) correctly shows all of the changes that these rocks have gone through in terms of the rocks that formed (boxes) and the processes that formed them (arrows)?

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