Refer to the exhibit.Why are two OSPF designated routers designated routers identified on Core-Router？（）

• A、Core-Router is connected more than one multi-access network
• B、The router at 208.149.23.130 is a secondary DR in case the primary fails.
• C、Two router IDs have the same OSPF priority and are therefore tied for DR election
• D、The DR ecection is still underway and there are two contenders for the role