Mark against the correct answer in the following:
Question:

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

$\int_{0}^{1} \frac{d x}{\left(e^{x}+e^{-x}\right)}=?$

A. $\left(1-\frac{\pi}{4}\right)$

B. $\tan ^{-1} \mathrm{e}$

C. $\tan ^{-1} \mathrm{e}+\frac{\pi}{4}$

D. $\tan ^{-1} \mathrm{e}-\frac{\pi}{4}$

Solution:

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