A company has an Office 365 tenant that has an Enterprise E1 subscription. Users currently sign in with credentials that

[answerhappygod]

A company has an Office 365 tenant that has an Enterprise E1 subscription. Users currently sign in with credentials that include the contoso.com domain suffix.
The company is acquired by Fabrikam. Users must now sign in with credentials that include the fabrikam.com domain suffix.
You need to ensure that all users sign in with the new domain name.
Which Windows PowerShell cmdlet should you run?

A. Set-MsolUser
B. Redo-MsolProvisionUser
C. Set-MsolUserLicense
D. Set-MsolUserPrincipalName
E. Convert-MsolFederatedUser
F. Set-MailUser
G. Set-LinkedUser
H. New-MsolUser