The September 11^th Attacks on the World Trade Center Were

The September 11^th attacks on the World Trade Center were different than those of Pearl Harbor because

A) people from different religious and ideological backgrounds were killed.
B) they cannot be considered a global confrontation.
C) they signaled America's entry into a long war.
D) Al Qaeda is a group comprised of transnational activists that does not represent the ideology of any sovereign state.