Integrate : $\int \limits _0^8 \tan ^{-1} x.dx$

Question

\[\begin {array} {1 1} (a)\;2 \pi-4 \log 2 \\ (b)\;2 \pi - \log 8 \\ (c)\;\pi-4 \log 2 \\ (d)\;2 \pi -3 \log 2 \end {array}\]