Mark against the correct answer in each of the following:

Question:

Mark $(\sqrt{)}$ against the correct answer in each of the following:

$\int \frac{(1-\cos 2 x)}{(1+\cos 2 x)} d x=?$

A. $\tan x+x+C$

B. $\tan \mathrm{x}-\mathrm{x}+\mathrm{C}$

C. $-\tan \mathrm{x}+\mathrm{x}+\mathrm{C}$

D. $-\tan x-x+C$

Solution:

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