The set of real values of $x$ satisfying ${\log _{1/2}}({x^2} - 6x + 12) \ge - 2$ is
The set of real values of $x$ satisfying ${\log _{1/2}}({x^2} - 6x + 12) \ge - 2$ is
- A
$\left( { - \infty ,\,2} \right]$
- B
$[2,\,4]$
- C
$\left[ {4, + \infty } \right)$
- D
None of these
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