and \( A \) be a \( 2 \times 2 \) matrix such that \( AB^{-1} = A^{-1} \). If \( BCB^{-1} = A \) and \( C^{4} + \alpha C^{2} + \beta I = 0 \), then \( 2\beta - \alpha \) is equal to
\( 2 \)
\( 8 \)
\( 16 \)
\( 10 \)