Question: Given R = { A , B , C , D , E } R = { A , B , C , D

Given R={A,B,C,D,E}R =\{A, B, C, D, E\}R={A,B,C,D,E}, and the set of functional dependencies F={ACBC,CABD,BE,DEAC}F =\{ AC \rightarrow BC,\, C \rightarrow ABD, \, B \rightarrow E,\, DE \rightarrow AC \}F={ACBC,CABD,BE,DEAC}, some of the functional dependencies in FFF that are redundant are:
Option A: {ACB,DEA}\{ AC \rightarrow B,\, DE \rightarrow A \}{ACB,DEA}
Option B: None of the choices are correct
Option C: {DEC}\{ DE \rightarrow C \}{DEC}
Option D: {ACB,DEC}\{ AC \rightarrow B,\, DE \rightarrow C \}{ACB,DEC}

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