\( \displaystyle \int\limits_{0}^{\infty}\frac{6}{e^{3x}+6e^{2x}+11e^{x}+6}\,dx = \)
\( \log_{e}\!\left(\dfrac{32}{27}\right) \)
\( \log_{e}\!\left(\dfrac{64}{27}\right) \)
\( \log_{e}\!\left(\dfrac{512}{81}\right) \)
\( \log_{e}\!\left(\dfrac{256}{81}\right) \)