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: U.S. Accuses Researchers of Animal Abuse (AP) AP - Federal regulators have accused University of California researchers of mistreating animals used in medical experiments over a three-year period, according to a complaint made public Tuesday by an animal-rights group.

Sci/Tech