What is the sine of angle between the vectors $\hat{i}+2 \hat{j}+3 \hat{k}$ and $-\hat{i}+2 \hat{j}+3 \hat{k}$ ?

• A

  $\sqrt{\frac{13}{7}}$
• Correct answer
  B

  $\frac{\sqrt{13}}{17}$
• C

  $\frac{13}{\sqrt{7}}$
• D

  None of the above

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