Which of the following limit exists? (A) \( \operatorname{Lim}_{x \rightarrow 0}\left(\frac{1}{x...

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Which of the following limit exists?
(A) \( \operatorname{Lim}_{x \rightarrow 0}\left(\frac{1}{x}\right) \)
(B) \( \lim _{x \rightarrow 0}\left(\frac{1}{x^{2}}\right) \)
(C) \( \operatorname{Lim}_{x \rightarrow 0}\left(2^{1 / x}\right) \)
(D) \( \operatorname{Lim} x \rightarrow \pi / 2(\tan x) \)
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