If two vectors $A$ and $B$ are mutually perpendicular,then the component of $A-B$ along the direction of $A+B$ is

  • A
    $|A|-|B|$
  • B
    $\frac{|A|-|B|}{\sqrt{|A|^2+|B|^2}}$
  • C
    $\frac{|A|^2-|B|^2}{\sqrt{|A|^2+|B|^2}}$
  • D
    $\frac{|A|^2+|B|^2}{\sqrt{|A|^2+|B|^2}}$

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