5 Let L = and U = Let Aj = -3 A2 = A3 = 2 8 A4 = -2 -2 Which one of the following statements is correct? L and U do not give an LU decomposition for any of the matrices A1, A2, A3, A4. O b. L and U give an LU decomposition for A2. Oc. L and U give an LU decomposition for A3. Od. L and U give an LU decomposition for A1. L and U give an LU decomposition for A4.

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