Farhad wrote this introduction for his essay about the United Nations:

Before World War II ended in 1945, Allied leaders realized the need for an effective organization of international cooperation. They agreed to form such an organization once the war ended. In September 1945, they officially launched the United Nations. Today, the UN serves as a center of economic, social, and military cooperation.

Which assessment of Farhad’s introduction is correct?

A.
It is effective because it summarizes the key points of the essay.
B.
It is ineffective because it does not include relevant details about the topic.
C.
It is effective because it introduces the topic and previews the information that will follow.
D.
It is ineffective because it is not logically connected to the information in the rest of the essay.