Refer to the exhibit
Which command does a voice administrator use to program ephone 1 to have extension 1000?
A. command button 1:1 under ephone-dn 1 configuration
B. command number 1:1 under ephone-dn 1 configuration
C. command number 1:1 under ephone 1 configuration
D. command button 1:1 under ephone 1 configuration
