7. There are materials that sink in water. Which of the following reasons explain why materials sink in water?
A. If the material is bigger, it will sink in water.
B. If the material is smaller, it will sink in water.
C.If the material is denser, it will sink in water.
D. If the material is less dense , it will sink in water. density and be A material w of water cotton and de keglass plate​