Which of the following was the main reason that the Iraq War was so controversial? A) Saddam Hussein had been using chemical weapons against the Kurds.

B)The United States wanted to invade Iraq even though they could not prove that Saddam Hussein had weapons of mass destruction.

C)The United States thought that Osama bin Laden was hiding somewhere in Iraq but they could not prove it so they invaded the entire country to find him.

D)The United Nations could not agree whether the Sunnis or Shia should control the government of Iraq after Saddam Hussein was removed from power in 2003.