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.
Answer: C