When Columbus Arrived in the Americas in 1492, Most Scholars

When Columbus arrived in the Americas in 1492, most scholars agree

A) the area was sparsely populated with relatively little diversity.
B) Californian Indians were the most populous and included a significant number of language families.
C) trading was limited and almost non-existent among the tribes located in North America.
D) the Indians east of the Mississippi spoke a greater number of different languages than the western Indians.