Integrate : $\int \large\frac {e^{2x}+e^{-2x}}{e^{2x}-e^{-2x}}$$dx$

Question

\[\begin {array} {1 1} (a)\;\log (e^{2x}-e^{-2x})+c \\ (b)\;\log (e^{2x}+e^{-2x})+c \\ (c)\;\log (e^{2x}-e^{-2x})^{1/2}+c \\ (d)\;None \end {array}\]