The line passing through the points $(1,1,-1)$ and $(3,-1,0)$ makes an angle of $\operatorname{Tan}^{-1}\left(\frac{1}{\sqrt{8}}\right)$ with plane $\sqrt{\lambda} x+3 y+6 z=17$. Then $\lambda=$

• A

  5
• B

  25
• Correct answer
  C

  15
• D

  12

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