Paragraph: Let $O$ be the origin, and $\overrightarrow{O X}, \overrightarrow{O Y}, \overrightarrow{O Z}$ be three unit vectors in the directions of the sides $\overrightarrow{Q R}, \overrightarrow{R P}$, $\overrightarrow{P Q}$, respectively, of a triangle $P Q R$.
Question: $|\overrightarrow{O X} \times \overrightarrow{O Y}|=$

• Correct answer
  A

  $\sin \left(P+Q\right)$
• B

  $\sin 2R$
• C

  $\sin \left(P+R\right)$
• D

  $\sin \left(Q+R\right)$

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