Q40

MSQ2 marks

Suppose the following functional dependencies hold on a relation $U$ with attributes $P,Q,R,S$ , and $T$ : $P \rightarrow QR$ $RS \rightarrow T$ Which of the following functional dependencies can be inferred from the above functional dependencies?

(A)

$PS \rightarrow T$

(B)

$R \rightarrow T$

(C)

$P \rightarrow R$

(D)

$PS \rightarrow Q$

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