According to the article, what caused Japan to attack Pearl Harbor?

A.When the Germans turned against the Soviet Union, Japan feared losing more territory.

B.Because it wanted to expand its borders, Japan sought to acquire the Pacific Islands.

C.When the Allies began to gain ground in Germany, Japan wanted to distract the Allies by attacking the United States.

D.Because Hitler gained Chinese territory, Japan set its sights on conquering the United States.