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: Gambro Sells U.S. Kidney Clinics Unit  STOCKHOLM (Reuters) - Swedish kidney-care company Gambro AB  has signed an agreement to sell its U.S. clinics business to  dialysis firm DaVita Inc. for \$3.05 billion in cash, Gambro  said on Tuesday.

Business