You have nine virtual file servers on a single Hyper-V physical host that contains two eight-core processors. Currently, each server is running Windows Server 2012 Standard edition on one host. You are thinking of migrating these servers to Windows Server 2012 R2. You run MAP over a three-day period for these servers and discover the following: Avg Proc 25 25 35 15 15 10 25 20 30 95% CPU utilization 5% 3% 6% 5% 3% 6% 5% 3% 6% Server 1 Server 2 Server 3 Server 4 Server 5 Server 6 Server 7 Server 8 Server 9 What type of upgrade these servers to Windows Server 2012 R2? license would you purchase? Why would you purchase this license if you upgrade these servers to Windows Server 2012 R2