Mark against the correct answer in the following:
Question:

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

$\int_{0}^{1} \sin ^{-1}\left(\frac{2 x}{1+x^{2}}\right) d x=?$

A. $\frac{1}{2}(\pi-\log 2)$

B. $\left(\frac{\pi}{2}-\log 2\right)$

C. $(\pi-2 \log 2)$

D. none of these

Solution:

 

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