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Exam 642-885 Question id=3382 Multicast Routing in a Service Provider IP NGN Environment

Refer to the Cisco IOS-XR configuration exhibit.
multicast-routing ! interface Loopback0 ipv4 address 10.3.1.1 255.255.255.255 ! interface GigabitEthernet0/0/0/0 ipv4 address 192.168.103.30 255.255.255.0 no shut ! interface GigabitEthernet0/0/0/1 ipv4 address 192.168.156.50 255.255.255.0 no shut ! router isis 1 net 49.0005.0100.0300.1001.00 address family ipv4 unicast ! interface Loopback0 address family ipv4 unicast ! interface GigabitEthernet0/0/0/0 address-family ipv4 unicast ! interface GigabitEthernet0/0/0/1 address-family ipv4 unicast ! router pim address-family ipv4 auto-rp mapping-agent Loopback0 scope 16 auto-rp candidate-rp Loopback0 scope 16 ! interface Loopback0 enable interface GigabitEthernet0/0/0/0 enable interface GigabitEthernet0/0/0/1 enable
The Cisco IOS-XR router is unable to establish any PIM neighbor relationships. What is wrong with the configuration?

A. The configuration is missing:
interface gi0/0/0/0 ip pim sparse-mode interface gi0/0/0/1 ip pim sparse-mode interface loopback0 ip pim sparse-mode
B. The configuration is missing:
multicast-routing address-family ipv4 interface gi0/0/0/0 enable interface gi0/0/0/1 enable
C. The auto-rp scoping configurations should be set to 1 not 16
D. The RP address has not been configured using the rp-address router PIM configuration command
E. PIM defaults to dense mode operations only, so PIM sparse mode must be enabled using the pim sparse-mode router PIM configuration command
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