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:2021-09-01, Stock:UNH, The news for the past five days is as follows:
2021-08-25: NEWS1: UnitedHealth Group (UNH) Arm Wins Medicaid Contract in Nevada.NEWS2: Joy Fitzgerald, UnitedHealth Group's Chief Diversity, Equity and Inclusion Officer, Shares Her Passion for a Brighter Future.NEWS3: What UnitedHealth's Big Move Means for These Telehealth Stocks.
2021-08-26: NEWS1: UnitedHealth Group (UNH) Dips More Than Broader Markets: What You Should Know.NEWS2: Cigna (CI) Expands Its Footprint in the ACA Marketplace.NEWS3: 4 Stocks Insiders Are Selling.
2021-08-27: NEWS1: 7 Safe Stocks To Buy for an Increasingly Unstable World.
2021-08-30: NEWS1: UnitedHealth Group's (NYSE:UNH) investors will be pleased with their impressive 231% return over the last five years.
2021-08-31: nan

Answer: Rise