Which command configures a Source Specific Multicast on a Cisco IOS XR router?
A. configure
multicast-routing address-family ipv4
interface all enable
exit
router igmp
version 3
commit
B. configure
multicast-routing address-family ipv4
interface all enable
exit
router igmp
version 2
commit
C. configure
multicast-routing address-family ipv4
interface all enable
exit
router igmp
version 1
commit
D. configure
interface all enable
exit
router igmp
version 3
commit
