The resultant of forces $\overrightarrow{P}$ and $\overrightarrow{Q}$ is $\overrightarrow{R}$. If $\overrightarrow{Q}$ is doubled, then $\overrightarrow{R}$ is doubled. If the direction of $\overrightarrow{Q}$ is reversed, then $\overrightarrow{R} $ is again doubled, then $p^2 : Q^2 : R^2$ is :

Question

( A ) 1 : 2 : 3
( B ) 3 : 1 : 1
( C ) 2 : 3 : 1
( D ) 2 : 3 : 2