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:2020-12-22, Stock:COST, The news for the past five days is as follows:
2020-12-15: NEWS1: If You Put $10,000 Into Costco Stock Last January, Here's How Much You'd Have Now.NEWS2: FedEx and UPS Are Limiting Package Pickups. What That Means for Retailers..NEWS3: Why Is Everyone Talking About Costco Stock?.NEWS4: Costco's Big Earnings Beat Points to Further Upside.NEWS5: ‘It’s Going to Rain Dividends and Buybacks Next Year.’ What to Expect for Markets and Consumer Stocks in 2021..NEWS6: Why Consumer Stocks Will Remain in Focus in 2021.
2020-12-16: NEWS1: These major retailers are spending millions of dollars to show employees appreciation.NEWS2: Costco (COST) Poised to Tap Rising Demand Amid COVID-19.NEWS3: Where Will Costco Be in 5 Years?.NEWS4: 10 Best Large-Cap Stocks To Buy According to Ray Dalio.
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.

Answer: Decrease