You need to view the path of the email messages sent from a user to an external recipient Which cmdlet should you use?

You have an Office 365 subscription that has several thousand mailboxes.
The users in the Office 365 organization are located in different regions.
You need to view the path of the email messages sent from a user to an external recipient
Which cmdlet should you use?

A.
Get-MailboxActivityReport

B.
Get-MailDetailTransportRuleReport

C.
Get-MailTrafficReport

D.
Get-ServiceDeliveryReport