Jonathan wants to see what will happen when he adds cotton balls, his plastic dinosaur, and a squirt of blue acrylic paint to a bowl of water. After giving it a stir, he notices that the water turns blue, the plastic dinosaur floats on the surface, and the cotton balls sink to the bottom. What does this tell you about his mixture?
A. All three substances dissolved in water.
B. The acrylic paint dissolved in water.
C. The cotton balls dissolved in water.
D. The plastic dinosaur dissolved in water.