Look at the graph below.

A graph titled Deaths during Vietnam Year shows countries on the horizontal axis and the Estimated number of deaths (thousands) on the vertical axis. The graph shows the following numbers by country: 100 American; 300 South Vietnamese; and 1,100 Communist.

Which conclusion would make the most sense after looking at the graph?
The infliction of heavy casualties upon the communists did not bring about a US victory in Vietnam.
The relatively low number of American casualties led a majority of Americans to support the Vietnam War.
The infliction of heavy casualties upon the communists led to a US victory in Vietnam.
Faced with heavy casualties, North Vietnam eventually gave up its attempt to control South Vietnam.