The Distinction Between the Crust and the Mantle Is Primarily

Multiple Choice

The distinction between the crust and the mantle is primarily on the basis of a difference in ____________;the distinction between the lithosphere and the asthenosphere is primarily on the basis of a difference in ____________.

A) chemistry (mineral content) ;degree of physical rigidity
B) color;chemistry (mineral content)
C) degree of physical rigidity;chemistry (mineral content)
D) chemistry (mineral content) ;chemistry as well