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

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

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Answer: AC