If A satisfies the equation \( x^{3}-5 x^{2}+4 x+\lambda=0 \), then...

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If A satisfies the equation \( x^{3}-5 x^{2}+4 x+\lambda=0 \), then \( A^{-1} \) exists if
(a) \( \lambda \neq 1 \)
(b) \( \lambda \neq 2 \)
(c) \( \lambda \neq-1 \)
(d) \( \lambda \neq 0 \)
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