Which of the Following Is Not Generally True of All

Which of the following is not generally true of all the terrestrial world lithospheres?

A) The lithosphere is broken into a set of large plates that float upon the softer rock below.
B) Rock in the lithosphere is stronger than rock beneath it.
C) The lithosphere extends from somewhere in the mantle all the way to the surface.
D) The thickness of the lithosphere depends on interior temperature,with cooler interiors leading to thicker lithospheres.