$A$ and $B$ are two points. The position vector of $A$ is $6b - 2a$. $A$ point $P$ divides the line segment $AB$ in the ratio $1 : 2$. If $a - b$ is the position vector of $P$,then the position vector of $B$ is given by:

  • A
    $7a - 15b$
  • B
    $7a + 15b$
  • C
    $15a - 7b$
  • D
    $15a + 7b$

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