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:2021-08-05, Stock:COST, The news for the past five days is as follows:
2021-07-29: NEWS1: As CDC reverses its mask guidance, Apple, Costco, Walmart and others have some soul searching to do.NEWS2: Costco's a Bargain for Its Bargains and a Solid Dividend.NEWS3: As CDC reverses mask policy, Apple, Costco, Walmart and others have some soul-searching to do.
2021-07-30: NEWS1: Costco (COST) Gains As Market Dips: What You Should Know.NEWS2: Why This 1 Momentum Stock Could Be a Great Addition to Your Portfolio.
2021-08-02: NEWS1: Costco, Kroger, Target, Walmart and Apple change mask policies, as CDC warns about rise in delta variant.
2021-08-03: NEWS1: Could This Be the Perfect Time for Costco to Raise Membership Prices?.
2021-08-04: NEWS1: Costco net sales rise 16.6% in July.NEWS2: Costco Wholesale Corporation Reports July Sales Results.NEWS3: Top Research Reports for Costco, Altria & Edwards Lifesciences.

Answer: Rise