The $x-$ coordinate of the incentre of the triangle that has the coordinates of midpoints of its sides as $(0,1), (1,1)$ and $(1,0)$ is

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

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