For $x \in \left( 0, \frac{3}{2} \right)$,let $f(x) = \sqrt{x}$,$g(x) = \tan x$,and $h(x) = \frac{1 - x^2}{1 + x^2}$. If $\phi(x) = ((h \circ f) \circ g)(x)$,then $\phi\left( \frac{\pi}{3} \right)$ is equal to

  • A
    $\tan \frac{11\pi}{12}$
  • B
    $\tan \frac{\pi}{12}$
  • C
    $\tan \frac{5\pi}{12}$
  • D
    $\tan \frac{7\pi}{12}$

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