Geologists Think That Oceanic Crust Is Different from Continental Crust

Multiple Choice

Geologists think that oceanic crust is different from continental crust because

A) seismic waves travel at different speeds through these layers.
B) oceanic crust is much thinner than continental crust.
C) S-waves don't travel through oceanic crust while they can through continental crust.
D) core samples reveal that oceanic crust is largely granite-like materials.