The correct answer is: "an armistice and Korea divided in two sovereign states"
The Korean War was fought between 1950 and 1953, during the Cold War era. Korea splitted in two halves . On one side, communist North Korea supported by the Soviet Union and China, attacked South Korea, supported by the US, and in this moment the war started.
The violence stopped in 1953, when an armistice was signed. It declared the division of Korea in two sovereign states and the location of the border along the 38th paralell. A communist state was founded in the North and an anti-communist capitalist republic in the South.