Mark against the correct answer in each of the following:
Question:

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

$\int \frac{1}{\left(1+x^{2}\right) \sqrt{\tan ^{-1} x}}$

A. $\frac{1}{2} \log \left|\tan ^{-1} x\right|+C$

B. $2 \sqrt{\tan ^{-1} \mathrm{x}}+\mathrm{C}$

C. $\frac{1}{2 \sqrt{\tan ^{-1} x}}+C$

D. none of these

Solution:

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