The Newest Theories of Early Native Migration from Asia to the Americas

The newest theories of early native migration from Asia to the Americas include:

A) This migration came much earlier than previously thought.
B) The Bering Land Bridge was the only avenue of migration.
C) Changes in Asia's climate drove natives to the Americas.
D) The natives built advanced sailing vessels for long seagoing voyages.
E) Early Asian societies drove these natives out and ultimately they settled in the Americas.