The position vectors of $P$ and $Q$ are respectively $\overrightarrow{a}$ and $\overrightarrow{b}$. If $R$ is a point on the line $PQ$ such that $\overrightarrow{PR}=5 \overrightarrow{PQ}$,then the position vector of $R$ is

  • A
    $5 \overrightarrow{b}-4 \overrightarrow{a}$
  • B
    $5 \overrightarrow{b}+4 \overrightarrow{a}$
  • C
    $4 \overrightarrow{b}-5 \overrightarrow{a}$
  • D
    $4 \overrightarrow{b}+5 \overrightarrow{a}$

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