You need to ensure that all of the VPN connections to Server1 are logged to the RADIUS server on Server2

Your network contains an Active Directory domain named contoso.com. All servers run
Windows Server 2012 R2.
The domain contains a server named Server1 that has the Network Policy Server server role
and the Remote Access server role installed. The domain contains a server named Server2
that is configured as a RADIUS server.
Server1 provides VPN access to external users.
You need to ensure that all of the VPN connections to Server1 are logged to the RADIUS
server on Server2.
What should you run?

A.
Add-RemoteAccessRadius -ServerNameServer1 -AccountingOnOffMsg Enabled SharedSecret “Secret” -Purpose Accounting

B.
Set-RemoteAccessAccounting -AccountingOnOffMsg Enabled -AccountingOnOffMsg
Enabled

C.
Add-RemoteAccessRadius -ServerName Server2 -AccountingOnOffMsg Enabled SharedSecret “Secret” -Purpose Accounting

D.
Set-RemoteAccessAccounting -EnableAccountingType Inbox -AccountingOnOffMsg
Enabled

Explanation:
Add-RemoteAccessRadius
Adds a new external RADIUS server for VPN authentication, accounting for DirectAccess
(DA) and VPN, or one-time password (OTP) authentication for DA.
AccountingOnOffMsg<String>
Indicates the enabled state for sending of accounting on or off messages. The acceptable
values for this parameter are:
Enabled.
Disabled. This is the default value.
This parameter is applicable only when the RADIUS server is being added for Remote
Access accounting.