Earth's 3 principal layers that are divided into:
A. Crust, Upper Mantle, Lower Mantle, Liquid Outer Core, and Solid Inner Care
B. Crust, Upper Mantle, Corona, Radiative Zone, Core O
C. Crust, Upper Mantle, Lower Mantle, Mid-Atlantic Ridge, East Pacific Rise
D. Crust, Subduction Zone, Convergent Boundary, Solid Inner Core