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Plz help! Consider a Relation R with five attributes A, B, C, D and E. The following dependencies are given: AB rightarrow C, BC rightarrow

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Consider a Relation R with five attributes A, B, C, D and E. The following dependencies are given: AB rightarrow C, BC rightarrow D. CD rightarrow E, DE rightarrow A. List all keys for R. Do not list superkeys that are not a key. Is R in 3NF? Briefly explain why. Is R in BGNF? If yes, please explain why. Otherwise, decompose R into relations that are in BCNF

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