According to the Theory of Plate Tectonics

According to the theory of plate tectonics,

A) the continents are moving but the ocean floor is not, leading to great friction
B) the rubbing of the waters of the Earth across its crust is speeding up its rotation
C) the liquid metal inside the Earth is developing plates of solid metallic material, which contribute to the Earth's magnetic field
D) earthquakes are caused by huge waves that come up from inside the molten core of the Earth
E) slow motions within the mantle of the Earth move large sections of the crust around