Which of the following best statements best describes a central idea of the text? A. Although the U. S was victorious in the Vietnam War, the American experience was long and painful. B. The war was catastrophic for the Vietnamese, and the U. S. failed in its mission to halt the spread of communism. C. The American public did not know what was happening during the Vietnam War, so people widely supported it. D. The Vietnam War had serious implications for the Vietnamese people, though it remained popular with the American public.