यदि $k \le \sin^{-1}x + \cos^{-1}x + \tan^{-1}x \le K$ है,तो

  • A
    $k = 0, K = \pi$
  • B
    $k = 0, K = \frac{\pi}{2}$
  • C
    $k = \frac{\pi}{2}, K = \pi$
  • D
    इनमें से कोई नहीं

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