Wie viele Besatzungszonen gab es in Deutschland nach dem Zweiten Weltkrieg?

Why this is the correct answer

Following Germany's surrender, the country was divided into four occupation zones, one each controlled by the United States, the Soviet Union, the United Kingdom, and France. This four-power arrangement was agreed at the Yalta and Potsdam conferences and came into force in mid-1945. Over time, the three Western zones merged to form West Germany, while the Soviet zone became East Germany.