If $f(x)=\sqrt{2-x^2}$ and $g(x)=\ln (1-x)$ are two real-valued functions,then the domain of the function $(f+g)(x)$ is

  • A
    $[-\sqrt{2}, \sqrt{2}]$
  • B
    $[-\sqrt{2}, 1)$
  • C
    $(-\infty, 1)$
  • D
    $(1, \sqrt{2}]$

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