You need to achieve this goal by using the least amount of administrative effort

You manage an Azure virtual network that hosts 15 virtual machines (VMs) on a single
subnet which is used for testing a line of business (LOB) application. The application is
deployed to a VM named TestWebServiceVM.
You need to ensure that TestWebServiceVM always starts by using the same IP address.
You need to achieve this goal by using the least amount of administrative effort.
What should you do?

A.
Use the Management Portal to configure TestWebServiceVM.

B.
Use RDP to configure TestWebServiceVM.

C.
Run the Set-AzureStaticVNetIP PowerShell cmdlet.

D.
Run the Get-AzureReservedIP PowerShell cmdlet.

Explanation:
Ref: http://msdn.microsoft.com/en-us/library/azure/dn630228.aspx