The attack on Pearl Harbor on December 7, 1941, was part of the Japanese plan to..?

E. exactly from my notes on world war 2, I quote "Japan was trying to create it's empire in Asia. Japan felt that the U.S. stood in the way of control of the Pacific." And you know the rest from there. However, if you want to convert E into A B C or D, it would be A, since that is simply what they did, however, that was a small part from a larger plan.