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: IBM Selling PC Unit to China's Lenovo (Reuters) Reuters - IBM is selling its\PC-making business to China's largest personal computer\company, Lenovo Group Ltd., for  #36;1.25 billion, marking the U.S.\company's retreat from an industry it helped pioneer in 1981.

Business