Based on the news about the stock in the past five trading days, please predict the rise or fall of the stock in the next trading day. If the stock is predicted to rise in the next trading day, please output [Rise], if the stock is predicted to fall in the next trading day, please output [Decrease].

Date:2020-01-23, Stock:COST, The news for the past five days is as follows:
2020-01-15: NEWS1: This environmental nonprofit is challenging Costco over toilet paper.NEWS2: XPO Logistics explores sale or spin-off of one or more of its businesses.NEWS3: Is Costco Wholesale (COST) Outperforming Other Retail-Wholesale Stocks This Year?.NEWS4: Dow Jones Futures Tilt Higher, But Target Holiday Sales Hit Big-Box Retailers.NEWS5: Target's disappointing holiday season reveals one big challenge for 2020.
2020-01-16: NEWS1: Costco (COST) Gains But Lags Market: What You Should Know.NEWS2: BJS Wholesale Club Inc -- Moody's upgrades BJS' corporate family rating to Ba3; outlook positive.
2020-01-17: NEWS1: IBD Live: Why Mastercard, UnitedHealth, Costco Are Long Term Leaders.NEWS2: Casper Sleep’s IPO expected to test appetite for loss-making unicorns.
2020-01-21: NEWS1: IBD Live Stocks To Buy And Watch: Costco, UnitedHealth, Tesla Make Notable Moves.NEWS2: US STOCKS-Wall Street falls as China virus reaches the U.S..NEWS3: Global Markets Turn Red Tuesday.NEWS4: Stock Market Worsens On Coronavirus Fears; China Stocks Hit, but Tesla, Costco Shine.NEWS5: Costco Stock Sat Out the S&P 500’s Big Rally. One Analyst Says It’s Time to Buy..NEWS6: Stock Market Sells Off As China Virus Scare Hits U.S.; These 4 Big Name Stocks Shoot Higher.NEWS7: PreMarket Prep Recap: Wait And See Approach To Coronavirus Outbreak, Coscto's Huge Move.NEWS8: Top Stock Research Reports for Roche, Royal Dutch Shell & Citigroup.NEWS9: Pick Costco & These 4 Retail Stocks for a Standout Portfolio.NEWS10: Costco Shares Affirmed Top Pick, Price Target Raised at Oppenheimer on Valuation.NEWS11: Oppenheimer Upgrades Costco, Highlights 'Attractive Entry Point'.
2020-01-22: NEWS1: Costco (COST) Soars to 52-Week High, Time to Cash Out?.NEWS2: Costco CEO Talks Special Dividend, Membership Fees In CNBC Interview.NEWS3: Costco Stock Breaks Out After Analyst Upgrade.NEWS4: The Zacks Analyst Blog Highlights: Costco Wholesale, The Buckle, Ross Stores, Target and Best Buy.NEWS5: The Zacks Analyst Blog Highlights: Roche, Royal Dutch Shell, Citigroup, UnitedHealth and Costco Wholesale.NEWS6: Buy These 5 Top-Ranked Stocks With Upgraded Broker Ratings.NEWS7: Costco Races to a New High, but There's Still Time to Shop.NEWS8: Market Direction and Trading Volume, Resilient Boeing, Trading Costco.

Answer: Rise