You are the Office 365 administrator for the contoso.com domain. You need to give a user named User1 full permissions for the mailbox of a user named User2. Which Windows PowerShell cmdlet should you run?

A.  Add-MailboxPermission -Identity user2@contoso.com -User user1@contoso.com  AccessRights   FullAccess

B.  Set-MailboxPermission -Identity user2@contoso.com -User user1@contoso.com – AccessRights Owner

C.  Add-MailboxPermission -Identity user1@contoso.com -User user2@contoso.com – AccessRights FullAccess

D.  Set-MailboxPermission -Identity user1@contoso.com -User user2@contoso.com – AccessRights Owner

Correct Answer: A