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: FDA letter asks Abbott to pull Kaletra promotions Materials used by Abbott Laboratories to promote its HIV-fighting drug Kaletra overstate the medicine #39;s effectiveness and fail to warn about risks in taking the drug, the US Food and Drug Administration said in a letter sent to the company.

Business