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:ABBV, The news for the past five days is as follows:
2020-12-15: NEWS1: AbbVie Inc. -- Moody's announces completion of a periodic review of ratings of AbbVie Inc..NEWS2: Health Canada Approves VENCLEXTA® (venetoclax) in combination with azacitidine or low dose cytarabine for untreated Acute Myeloid Leukemia (AML).NEWS3: 20 Biggest Healthcare Companies By Revenue.
2020-12-16: NEWS1: AbbVie (ABBV) Outpaces Stock Market Gains: What You Should Know.NEWS2: Galapagos Stock Crumbles After Its Gilead Arthritis Deal Falls Apart.
2020-12-17: NEWS1: 3 Dividend Stocks I'd Buy Right Now.
2020-12-18: NEWS1: AbbVie (NYSE:ABBV) Has Gifted Shareholders With A Fantastic 124% Total Return On Their Investment.
2020-12-21: nan

Answer: Decrease