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Conflict serializabilty

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For the given schedule which of the following statement is true?

S: R4(A), R2(A), R3(A), W1(B), W2(C), R4(B), W2(B)

(a) The schedule cannot be serialized

(b) The schedule is equivalent to T3, T4, T1, T2

(c) The schedule is equivalent to T1, T4, T3, T2

(d) The schedule is equivalent to T2, T3, T1, T4
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