which screen will Cisco TelePresence endpoint A see Cisco TelePresence endpoint E?

Given the following:
Cisco TelePresence endpoint A: CTS-3000
Cisco TelePresence endpoint B: CTS-1000
Cisco TelePresence endpoint C: CTS-1300
Cisco TelePresence endpoint D: CTS-1000
Cisco TelePresence endpoint E: CTS-1000
For a multipoint meeting between these endpoints with room switching, endpoint A calls in first, followed by endpoint B, then endpoint C, then endpoint 0, and then endpoint E. Then endpoint B drops from the call.
On which screen will Cisco TelePresence endpoint A see Cisco TelePresence endpoint E?

A.
left

B.
center

C.
right

D.
randomly