In the U1900+SC solution, eSpace 8950 is used to call the conference access number of the video conference system. When the conference list page appears on the phone screen, which statement is correct ()

In the U1900+SC solution, eSpace 8950 is used to call the conference access number of the video conference system. When the conference list page appears on the phone screen, which statement is correct ()
A . You can select the conference B you want to join through the touch screen of the 8950 phone.
B . You can use the arrow keys on the 8950 phone to select the conference you want to join
C . The number key 2468 of the 8950 phone can be used to select the conference to join
D . You can use the microphone of the 8950 phone to select the conference you want to join by voice.

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Answer: C