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:2020-12-18, Stock:EXC, The news for the past five days is as follows:
2020-12-11: NEWS1: Brookfield Renewable Acquires Distributed Generation Platform, Increasing Total Portfolio to Approximately 2,000 Megawatts of Operating and Under Development Distributed Generation in the U.S..NEWS2: Are Institutions Heavily Invested In Exelon Corporation's (NASDAQ:EXC) Shares?.
2020-12-14: nan
2020-12-15: NEWS1: A Look Into Exelon's Price Over Earnings.
2020-12-16: nan
2020-12-17: nan

Answer: Decrease