$\lim _{x \rightarrow 0} \frac{\tan 2x - 2\tan x}{(1 - \cos x)(2^x - 1)} = $
- A$\frac{2}{\ln 2}$
- B$\frac{1}{\ln 4}$
- C$4 \ln 2$
- D$\frac{4}{\ln 2}$
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