Which two problems are likely to arise from this design?

A customer has implemented a N+1 high availability plan in a multistory building. All APs on odd numbered floors are set as primary to WLC-A and all APs on even numbered floors are set as primary to WLC-8.

Which two problems are likely to arise from this design? (Choose two)
A . inconsistent CleanAir data due to multiple WLCs
B . floor-to-floor bleed-through that causes intercontroller roaming delays
C . AVC inconsistency due to multiple mobility group members
D . legacy device compatibility with multiple WLC configuration that causes disconnects
E . unpredictable AP loading during a WLC failure

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Answer: A,C