The equation of plane passing through $(1,0,0)$ and $(0,1,0)$ and making an angle $45^{\circ}$ with the plane $x+y-3=0$ is
- A
$x+y \pm \sqrt{2} z-1=0$
- B
$3 x+y \pm \sqrt{3} z-3=0$
- C
$\quad x+y \pm \sqrt{3} z-1=0$
- D
$\quad 2 x+2 y \pm \sqrt{3} z-2=0$
✓ Correct answer: A
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