If $\left[\begin{array}{ccc} 1 & -3 & 2 \\ 2 & -8 & 5 \\ 4 & 2 & \lambda \end{array}\right]$ is not an invertible matrix, then what is the value of $\lambda$ ?

• A

  -1
• B

  0
• Correct answer
  C

  1
• D

  2

Hence, the correct answer is option: 'C'.