You are an Office 365 administrator. Messages from Office 365 users in your company to external recipients include an attachment named Winmail.dat. You need to ensure that external messages do not include this attachment. Which Windows PowerShell cmdlet should you run?

A. Set-RemoteDomain Default -TLSEnabled $true
B. Set-RemoteDomain Default -TNEFEnabled $true
C. Set-RemoteDomain Default -TNEFEnabled $false
D. Set-RemoteDomain Default -TLSEnabled $false

Correct Answer: C