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:2019-12-16, Stock:UNH, The news for the past five days is as follows:
2019-12-09: NEWS1: UnitedHealth Group (UNH) Dips More Than Broader Markets: What You Should Know.NEWS2: US Indexes Close Lower Monday.NEWS3: Diplomat Pharmacy, Inc. -- Moody's reviews Diplomat Pharmacy for upgrade.NEWS4: U.S. stock market snaps 3-day win streak as China tariff deadline comes in focus.NEWS5: Stocks lower, still within striking distance of records as trade deadline looms.NEWS6: Here’s the hard-money call for why the boom in the economy and stock market will continue.NEWS7: UnitedHealth To Buy Diplomat Pharmacy For $300M.NEWS8: UnitedHealth's Optum will take over Diplomat Pharmacy in $300 million deal.NEWS9: Dow futures retreat to start week after stock market’s best session in months.NEWS10: UnitedHealth's Optum to acquire Diplomat Pharmacy for $4 a share in cash.NEWS11: UPDATE 2-Diplomat Pharmacy agrees to $300 million buyout by UnitedHealth.NEWS12: UnitedHealth to Buy Diplomat Pharmacy for $4 a Share, Combine Firm With OptumRx.NEWS13: Diplomat, OptumRx Combining to Advance Access to Specialty Pharmacy Care and Infusion Services, Improve Health Outcomes.
2019-12-10: NEWS1: UnitedHealth (UNH) to Buy Diplomat, Expand Pharmacy Services.NEWS2: The 13 Best Health-Care Stocks to Buy for 2020.
2019-12-11: NEWS1: 6 Trade-Proof Sector ETFs to Follow if No Deal is Cracked.
2019-12-12: NEWS1: SHAREHOLDER ALERT: WeissLaw LLP Investigates Diplomat Pharmacy, Inc..NEWS2: Dow Jones Today Jumps Ahead Of White House China Trade Meeting; Starbucks Rumbles, These 4 Blue Chips In Buy Range.NEWS3: UnitedHealthcare hones in on digital health for its first Techstars class of startups.
2019-12-13: NEWS1: UnitedHealth, Apple Inc. share gains lead Dow's nearly 100-point climb.

Answer: Rise