If both $f(x)$ and $g(x)$ are differentiable functions at $x = x_0$,then the function defined as $h(x) = \text{Maximum} \{f(x), g(x)\}$:

  • A
    is always differentiable at $x = x_0$
  • B
    is never differentiable at $x = x_0$
  • C
    is differentiable at $x = x_0$ provided $f(x_0) \neq g(x_0)$
  • D
    cannot be differentiable at $x = x_0$ if $f(x_0) = g(x_0)$

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