How Did the U

How did the U.S. acquire the U.S. Virgin Islands?

A) The U.S. acquired them illegally from France.
B) The U.S. traded the Bahamas to get them from the United Kingdom.
C) The U.S. won them in the Spanish American War.
D) The U.S. purchased them from Denmark.
E) Citizens of the Virgin Islands voted to become a territory of the U.S.