Which of the following are the leading theories that describe how people first arrived in North America? Select the two correct answers.

A.
People may have walked over a land bridge from Asia.

B.
People may have traveled over by boat along the Pacific Coast.

C.
People may have sailed across the Atlantic Ocean.

D.
People may have crossed over from South America.

E.
People may have walked across the then-frozen Pacific Ocean

A. People may have walked over a land bridge from Asia.

B. People may have traveled over by boat along the Pacific Coast.