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