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: Saudi Vows to Guarantee Oil Supplies  ABU DHABI (Reuters) - Top oil exporter Saudi Arabia vowed  Sunday to guarantee world crude supplies and said it would hold  1.5-2.0 million barrels per day of spare production in reserve.

Business