The dc’s of the line passing through P $(2,3,-1)$ and the origin are

• A

  $\left(\frac{{\displaystyle 2}}{{\displaystyle \sqrt{14}}},\frac{{\displaystyle 3}}{{\displaystyle \sqrt{14}}},\frac{{\displaystyle 1}}{{\displaystyle \sqrt{14}}}\right)$

• B

  $\left(\frac{{\displaystyle 2}}{{\displaystyle \sqrt{14}}},\frac{{\displaystyle -3}}{{\displaystyle \sqrt{14}}},\frac{{\displaystyle 1}}{{\displaystyle \sqrt{14}}}\right)$

• C

  $\left(\frac{{\displaystyle -2}}{{\displaystyle \sqrt{14}}},\frac{{\displaystyle -3}}{{\displaystyle \sqrt{14}}},\frac{{\displaystyle 1}}{{\displaystyle \sqrt{14}}}\right)$

• D

  $\left(\frac{{\displaystyle 2}}{{\displaystyle \sqrt{14`}}},\frac{{\displaystyle -3}}{{\displaystyle \sqrt{14}}},\frac{{\displaystyle -1}}{{\displaystyle \sqrt{14}}}\right)$