Which two design recommendations are most appropriate when EIGRP is the data center core routing protocol?（）

• A、Summarize data center subnets.
• B、Use passive interfaces to ensure appropriate adjacencies.
• C、Tune the EIGRP timers to enable EIGRP to achieve quicker convergence.
• D、Adjust the default bandwidth value to ensure proper bandwidth on all links.
• E、Advertise a default summary route into the data center core from the aggregation layer.