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:2020-12-24, Stock:COST, The news for the past five days is as follows:
2020-12-17: nan
2020-12-18: nan
2020-12-21: NEWS1: Better Buy: Costco vs. Unilever.NEWS2: 4 Discount Retailers Set to Maintain Winning Streak in 2021.
2020-12-22: NEWS1: Three Retailers Set for Sales Growth Regardless of Vaccine Timing.NEWS2: Better Buy: Costco vs. Best Buy.NEWS3: Bottlenecks Wear Down World Economy’s Fleet of Container Ships.
2020-12-23: NEWS1: Meats and cheeses: Charcuterie boards, specialty boxes spike during COVID-19 'with no signs of slowing down'.NEWS2: IPO Stocks to Trade: 2 to Buy, 1 to Sell.NEWS3: Better Buy: Costco vs. Walmart.

Answer: Rise