Which two improvements do SIA-Query and SIA-Reply messages add to EIGRP? (Choose two)

Which two improvements do SIA-Query and SIA-Reply messages add to EIGRP? (Choose two)
A . They prevent a route from going into the stuck-in-active state
B . Stuck-in-active conditions are solved faster
C . The EIGRP adjacency between two neighbors never goes down
D . They help in the localization of the real failure in the network

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Answer: BD