Option E is the correct answer.
The Set-AzureStaticVNetIP PowerShell cmdlet is used to set a static internal IP address for an Azure virtual machine. This cmdlet allows you to set the IP address, subnet mask, and default gateway for the virtual machine's network interface.
Option A, New-AzureRMVMConfig, is used to create a new virtual machine configuration object.
Option B, Set-AzureSubnet, is used to modify the properties of an existing Azure subnet, not to set static IP addresses for virtual machines.
Option C, modifying VM properties in the Azure Management Portal, does not provide a way to set static IP addresses for virtual machines.
Option D, modifying the IP properties in Windows Network and Sharing Center, only applies to the local network interface of the VM and does not set a static internal IP address for the VM on the Azure virtual network.