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:2021-03-18, Stock:EXC, The news for the past five days is as follows:
2021-03-11: NEWS1: The Zacks Analyst Blog Highlights: UnitedHealth Group, Pfizer, International Business Machines, Humana and Exelon.
2021-03-12: nan
2021-03-15: NEWS1: Tenaska Georgia Partners, L.P. -- Moody's revises Tenaska Georgia's outlook to negative from stable.
2021-03-16: nan
2021-03-17: nan

Answer: Decrease