If $\overline{\mathrm{OA}}=3 \bar{i}+\bar{j}-\bar{k},|\overline{\mathrm{AB}}|=2 \sqrt{6}$ and the direction ratios of $\overline{\mathrm{AB}}$ are $1,-1,2$ then $|\overline{\mathrm{OB}}|=$

• A

  $\sqrt{41}$
• Correct answer
  B

  $\sqrt{35}$
• C

  $\sqrt{26}$
• D

  $\sqrt{55}$

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