To which subnets can you apply NSG1?

You have an Azure subscription that contains the resources in the following table.

To which subnets can you apply NSG1?
A . the subnets on VNet2 only
B. the subnets on VNet1 only
C. the subnets on VNet2 and VNet3 only
D. the subnets on VNet1, VNet2, and VNet3
E. the subnets on VNet3 only

Answer: E

Explanation:

All Azure resources are created in an Azure region and subscription. A resource can only be created in a virtual network that exists in the same region and subscription as the resource.

References: https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-vnet-plan-design-arm