What Was the Significance of the Ship Lusitania

What was the significance of the ship Lusitania?

A) It was a German ship that was sunk by the British early in the war, signaling the turning tide of the war and convincing Americans they could count on the Allies winning.
B) It was one of the most formidable battleships in the British navy that sunk during one of the earliest and largest battles during the war, causing the United States to delay entering the war.
C) It was a British passenger ship secretly carrying ammunition, and its sinking by German U-boats caused many civilian deaths, including those of Americans, and sparked an outcry in the United States.
D) It was the only passenger ship attacked during the war, resulting in Germany honoring the wartime custom of stopping an enemy vessel and allowing passengers to escape before sinking it.
E) Its sinking was a victory for the United States and caused Wilson to slow efforts to strengthen the army and the navy so that he could attend to other pressing economic issues for the time being.