Use the graph below, showing the number of wounded, killed, and missing for the nations involved in the Korean War, to answer the following question: Which of the following is a reasonable interpretation of this information? Chinese casualties were high because most of the fighting took place on the North Korean/Chinese border.

United States casualties were very low because American units did not actively participate in the fighting.

Korean civilian deaths were very high because the fighting took place on Korea's soil.

North Korea had the smallest number of deaths due to the high quality of their medical care.