The equation of the plane passing through the point $\left(-1,2,1\right)$ and perpendicular to the line joining the points $\left(-3,1,2\right)$ and $\left(2,3,4\right)$ is ________

• Correct answer
  A

  $\stackrel{-}{r}.\left(5\widehat{i}+2\widehat{j}+2\widehat{k}\right)=1$
• B

  $\stackrel{-}{r}.\left(5\widehat{i}+2\widehat{j}+2\widehat{k}\right)=-1$
• C

  $\stackrel{-}{r}.\left(5\widehat{i}-2\widehat{j}+2\widehat{k}\right)=-5$
• D

  $\stackrel{-}{r}.\left(5\widehat{i}-2\widehat{j}-2\widehat{k}\right)=1$

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