If $a, b, c$ are non-collinear vectors such that for some scalars $x, y, z,$ $xa + yb + zc = 0,$ then

  • A
    $x = 0, y = 0, z = 0$
  • B
    $x \neq 0, y \neq 0, z = 0$
  • C
    $x = 0, y \neq 0, z \neq 0$
  • D
    $x \neq 0, y \neq 0, z \neq 0$

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