You have an Azure subscription that contains the resources shown in the following table.
Subnet1 is on VNET1. VM1 connects to Subnet1.
You plan to create a virtual network gateway on VNET1.
You need to prepare the environment for the planned virtual network gateway.
What should you do?
A. Create a local network gateway.
B. Modify the address space used by Subnet1.
C. Create a subnet named GatewaySubnet on VNET1.
D. Modify the address space used by VNET1.
E. Delete Subnet1.