Ononot — Let A be a 4 \times 4 real symmetric matrix with eigenvalues

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Eigenvalues & Eigenvectorshard

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Let $A$ be a $4 \times 4$ real symmetric matrix with eigenvalues $-2, 1, 3, 5$ . Let $B$ be a $3 \times 3$ principal submatrix of $A$ (formed by deleting one row and its corresponding column). Which of the following could be the eigenvalues of $B$ ?