Which statement describes what happens when you add a DID to an eFax account?

Which statement describes what happens when you add a DID to an eFax account?
A . FortiVoice will monitor for CNG tones on the DID when the calls come in on that number
B . The eFax account can use the DID for sending out only.
C . Calls to the DID will go directly to the eFax account.
D . FortiVoice will ignore inbound calls to the DI

Answer: A