Let $f(x) = \sin x$ and $g(x) = \cos x$. Which of the following statements is false?

  • A
    The period of $f(g(x))$ is $2\pi$.
  • B
    The period of $g(f(x))$ is $\pi$.
  • C
    $f(g(x))$ is an odd function.
  • D
    $g(f(x))$ is an even function.

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