Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Pentagon Seeks Check on RAND Air Tanker  WASHINGTON (Reuters) - The Pentagon, under fire for rushing  an outside report on ways to replace the U.S. Air Force's aging  KC-135 mid-air refueling tankers, is seeking a second opinion,  the top U.S. weapons buyer said Wednesday.

Business