If \( y=y(x) \) is the solution curve of the differential equation \( \dfrac{dy}{dx}+y\tan x = x\sec x \), \( 0 \le x \le \dfrac{\pi}{3} \), \( y(0)=1 \) Then \( y\!\left(\dfrac{\pi}{6}\right) \) is equal to:
\( \dfrac{\pi}{12}+\dfrac{\sqrt{3}}{2}\,\log_{e}\!\left(\dfrac{2}{e\sqrt{3}}\right) \)
\( \dfrac{\pi}{12}-\dfrac{\sqrt{3}}{2}\,\log_{e}\!\left(\dfrac{2\sqrt{3}}{e}\right) \)
\( \dfrac{\pi}{12}+\dfrac{\sqrt{3}}{2}\,\log_{e}\!\left(\dfrac{2\sqrt{3}}{e}\right) \)
\( \dfrac{\pi}{12}-\dfrac{\sqrt{3}}{2}\,\log_{e}\!\left(\dfrac{2}{e\sqrt{3}}\right) \)