Refer to the exhibit. EIGRP is configured on all routers in the network. On a basis of the show ip eigrp topology output provided, what conclusion can be derived?（）

• A、Router R1 is waiting for a reply from the neighbor 10.1.2.1 to the hello message sent out inquiring for a second successor to network 10.6.1.0/24.
• B、Router R1 can send traffic destined for network 10.6.1.0/24 out of interface FastEthernet0/0.
• C、Router R1 is waiting for a reply from the neighb or 10.1.2.1 to the hello message sent out before it declares the neighbor unreachable.
• D、Router R1 is waiting for a reply from the neighbor 10.1.2.1 in response to the query sent out about network 10.6.1.0/24.