The number of positive integral solutions $\left| {\,\,\begin{array}{*{20}{c}}{1 - \lambda }&2&1\\{ - 3}&\lambda &{ - 2}\\2&{ - 2}&{1 + \lambda }\end{array}\,\,} \right|$ $= 0$ is

  • A

    $0$

  • B

    $2$

  • C

    $3$

  • D

    $1$

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  • [AIEEE 2002]

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