How does the change in native population after the arrival of the Spanish in Mesoamerica compare to the change in the Andes?

A$.$ The Andean population was much more isolated than the Mesoamericans and was largely untouched by the effects of contact with Europeans.

B$.$ In Mesoamerica, the greatest killer of native populations was warfare, while in the Andes it was primarily smallpox.

c$.$ The Mesoamerican population was originally significantly smaller than the Andes population but lost a larger percentage of its native population to disease and warfare once the Spanish arrived.

D$.$ The pre$-$ and post$-$Spanish arrival native population numbers in the two regions were very similar because both areas were hit hard by war and disease.