What Do the Appalachians Have in Common Tectonically with the Himalayas

Multiple Choice

What do the Appalachians have in common tectonically with the Himalayas?

A) They are both unusual places where ocean crust overrode the continent.
B) They are both active, convergent, continental- margin arc systems.
C) They both formed by continent- continent collision.
D) They both formed by continental rifting.