Which two statements are requirements regarding hunt group options for B-ACD implementation on Cisco Unified Communicati

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Which two statements are requirements regarding hunt group options for B-ACD implementation on Cisco Unified Communications Manager Express routers?
(Choose two.)

A. The ephone hunt group is mandatory.
B. Either the ephone hunt group or the voice hunt group is acceptable.
C. Hunt group members must be SCCP IP phones.
D. Hunt group members can include both SCCP or SIP IP phones.
E. Hunt group members must be SIP IP phones.
F. The member hunting mechanism must be set to sequential.