which situation would a new TX9000 system boot up as a Cisco TelePresence System 500-32 device?

In which situation would a new TX9000 system boot up as a Cisco TelePresence System 500-32
device?

A.
no connection to Cisco Unified Communications Manager

B.
static IP configuration

C.
configured as a SIP device in Cisco Unified Communications Manager

D.
no connection to the other three codecs