A network administrator is troubleshooting an EIGRP connection between RouterA， IP address10.1.2.1， and RouterB， IP address 10.1.2.2. Given the debug output on RouterA， which twostatements are true？（）
A. RouterA received a hello packet with mismatched metric-calculation mechanisms
B. RouterA received a hello packet with mismatched authentication parameters
C. RouterA will form an adjacency with RouterB
D. RouterA received a hello packet with mismatched autonomous system numbers
E. RouterA received a hello packet with mismatched hello timers
F. RouterA will not form an adjacency with RouterB
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