Consider the relation R(X, Y, W, Z, P, Q), and the set F = {XY → W, XW → P, PQ → Z, XY → Q}. R is decomposed into R1(Z, P, Q) and R2(X, Y, W, P, Q). Which of the following is true about R?

1
Only lossless decomposition
2
Only dependency preserving decomposition
3
Neither lossless decomposition nor dependency preserving decomposition
4
Both lossless decomposition and dependency preserving decomposition

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