What is the difference between layering and terracing?


A. More depth can be achieved with layering than with terracing.
B. In layering, the materials are more three-dimensional than in terracing.
C. In layering, materials such as leaves can't be reversed to reveal different colors on the back. But in terracing, they can.
D. In terracing, the materials used are thicker than in layering.

im thinking C