The function $f(x) = x^{\frac{1}{\ln x}}$ is:

  • A
    a constant function
  • B
    having a domain $(0, 1) \cup (1, \infty)$
  • C
    such that $\lim_{x \to 1} f(x)$ exists
  • D
    both $(A)$ and $(C)$

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