Refer to the exhibit. You have six IP phones configured to use MRGL_CFB. There are currently five conferences in progress. What will happen if the sixth IP phone tries to initiate a conference?
Exhibit:
A. the conference will use SW_CFB_3 since it is the default and is not assigned to MRGL_CFB
B. the conference will be attempted until the MRGL timer expires
C. the first conference resource that becomes available will be used for conference 6
D. the conference will be rejected because there are no conference resources left
