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:2019-09-20, Stock:COST, The news for the past five days is as follows:
2019-09-13: NEWS1: Is Costco Stock A Buy Right Now? Here's What Earnings, Chart Say.
2019-09-16: NEWS1: Things You Must Know Before NIKE's (NKE) Q1 Earnings Results.
2019-09-17: NEWS1: Yemen's Houthi rebel attack on Saudi Arabia oil may hit Costco and BJ's profits.
2019-09-18: NEWS1: Redbook Shows US Same-Store Sales Gained More Than 5% Last Week.NEWS2: 17 Consumer Staples Stocks to Take the Edge Off Your Portfolio.NEWS3: Things You Must Know Prior to Rite Aid's (RAD) Q2 Earnings.NEWS4: TGT or COST: Which Is the Better Value Stock Right Now?.
2019-09-19: NEWS1: Assessing Retail Standout Costco (COST) Stock Ahead of Q4 Earnings.NEWS2: Costco (COST) Stock Moves -1.57%: What You Should Know.NEWS3: [video]The Best Stocks Are Never Cheap: Cramer's 'Mad Money' Recap (Thursday 9/19/19).NEWS4: Jim Cramer: Costco's Downgrade Can Be Both Logical AND an Opportunity to Buy.NEWS5: Good Time to Take Costco Profits.NEWS6: Bernstein: Costco Overvalued By 'Pretty Much Every Measure'.NEWS7: 7 Consumer Stocks to Buy in an Uncertain Market.NEWS8: Stock Market Rally Continues; Dow Jones Stock Microsoft Is Breaking Out Today.NEWS9: Costco's Climbing and Still Has Room to Grow.NEWS10: Costco Shares Falls After Bernstein Downgrades to Underperform on Valuation.

Answer: Decrease