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

Given R={A,B,C,D,E}
If AB>C, AB>D, A>E,
Transforming the relation R to 3NF and identify the PKs for each resulting relation. Which is the correct transformation?
R1={A,B,C}, PK={A}
R2={A,B,D}, PK={A}
R3={A,E}, PK={A}
R1={A,B,C,D}, PK={A,B}
R2={A,E}, PK={A}
R1={A,B,C}, PK={A,B}
R2={A,B,D}, PK={A,D}
R3={A,E}, PK={A}
R1={A,B,C}, PK={A,B}
R2={A,B,D}, PK={A,B}
R3={A,E}, PK={A}

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