You have an Azure subscription that contains the following resources:

A virtual network named VNet$1.$

A storage account named storage$1$ that has a private endpoint.

A Windows Server VM named VM$1$ that is connected to VNet$1.$ VM$1$ runs a DNS server for a domain named contoso.local.

Your on$-$premises datacenter is connected to VNet$1$ via ExpressRoute.

You need to ensure that on$-$premises DNS servers can resolve the name of storage$1$ to the IP address associated to the private endpoint.

What should you configure on the on$-$premises DNS servers?

Select only one answer.

Add VM$1$ as a conditional forwarder.

Add $8\mathrm{.}8\mathrm{.}8\mathrm{.}8$ as a forwarder.

Add $168\mathrm{.}63\mathrm{.}129\mathrm{.}16$ as a conditional forwarder.

Add $168\mathrm{.}63\mathrm{.}129\mathrm{.}16$ as a forwarder.