$\mathrm {\int x \sec ^{2} x d x=}$ কত?

$\mathrm {x \tan x+\ln |\sin x|+c}$

$\mathrm {x \tan x-\ln |\sin x|+c}$

$\mathrm {x \tan x+\ln |\cos x|+c}$

$\mathrm {x \tan x-\ln |\cos x|+c}$