Contoso Ltd. uses Office 365 for collaboration. You are implementing Active Directory Federation Services (AD FS) for si

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Contoso Ltd. uses Office 365 for collaboration. You are implementing Active Directory Federation Services (AD FS) for single sign-on (SSO) with Office 365 services. The environment contains an Active Directory domain and an AD FS federation server.
You need to ensure that the environment is prepared for the AD FS setup.
Which two actions should you perform? Each correct answer presents part of the solution.

A. Configure Active Directory to use the domain contoso.com.
B. Configure Active Directory to use the domain contoso.local.
C. Create a server authentication certificate for the federation server by using fs.contoso.com as the subject name and subject alternative name.
D. Create a server authentication certificate for the federation server by using fs.contoso.local as the subject name and subject alternative name.