Which three video endpoints can you set back to factory reset by using physical button presses? (Choose three.)

Which three video endpoints can you set back to factory reset by using physical button presses? (Choose three.)
A . Cisco TelePresence C40
B . Cisco TelePresence EX90
C . Cisco TelePresence C60
D . Cisco TelePresence SX20
E . Cisco TelePresence EX60
F . Cisco TelePresence C90

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Answer: B, D, E