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: S P Lowers Merck Debt Rating Amid Vioxx Concern A third major debt ratings agency has stripped Merck  #38; Co. of its top credit grade, lowering the drug maker's classification by three notches amid concerns stemming from its recall of the arthritis drug Vioxx.

Business