The diagram below shows four layers of Earth. Helium atom. There are two particles with negative charge in the outer-most region of the atom, two particles with positive charge (labeled 'A.' The layer around the central region is labeled 'B.' The outermost layer is labeled 'D.' The layer inside Earth which is just after layer D is labeled 'C.' Which of these layers is composed of materials with a plastic nature? (3 points) Group of answer choices Layer D Layer B Layer C Layer A