If the equation $x^8 - kx^2 + 3 = 0$ has a real solution, then least integral value of $k$ is-
If the equation $x^8 - kx^2 + 3 = 0$ has a real solution, then least integral value of $k$ is-
- A
$3$
- B
$2$
- C
$1$
- D
$4$
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