The Cartesian equation of the lien passing through the points $\mathrm{A}$ $(2,2,1)$ and $B(1,3,0)$ is

• A

  $\frac{\mathrm{x}+2}{1}=\frac{\mathrm{y}+2}{-1}=\frac{\mathrm{z}+1}{-1}$
• Correct answer
  B

  $\frac{\mathrm{x}-2}{-1}=\frac{\mathrm{y}-2}{1}=\frac{\mathrm{z}-1}{-1}$
• C

  $\frac{x+2}{-1}=\frac{y+2}{1}=\frac{z+1}{-1}$
• D

  None of these

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