$\int_0^{\frac{\pi}{2}}|\sin x-\cos x| d x$ का मान क्या है?

  • A
    $2 \sqrt{2}+1$
  • B
    $2(\sqrt{2}+1)$
  • C
    $2(\sqrt{2}-1)$
  • D
    $2 \sqrt{2}-1$

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