`int x sin x sec^(3) x dx =`

Options

A. `(1)/(2) [sec^(2)x - tan x] + c`
B. `(1)/(2)[x sec^(2) x - tan x] + c`
C. `(1)/(2) [x sec^(2) x + tan x] + c`
D. `(1)/(2) [sec^(2)x + tan x] + c`

Answer

B