What should you do?

You have Azure virtual machines that run Windows Server 2019 and are configured as shown in the following table:

You create a public Azure DNS zone named adatum.com and a private Azure DNS zone named contoso.com.
For contoso.com, you create a virtual network link named link1 as shown in the exhibit. (Click the Exhibit tab.)
Exhibit

You discover that VM1 can resolve names in contoso.com but cannot resolve names in adatum.com. VM1 can resolve other hosts on the internet.
You need to ensure that VM1 can resolve host names in adatum.com.
What should you do?
A. Modify the Access control (IAM) settings for link1.
B. Configure the name servers for adatum.com at the domain registrar.
C. Update the DNS suffix on VM1 to be adatum.com.
D. Create an SRV record in the contoso.com zone.