Integrate the function $e^x\bigg(\frac{1+\sin x}{1+\cos x}\bigg)$

Question

$\begin{array}{1 1} e^x \tan \large\frac{x}{2} + c \\ e^x \sin \large\frac{x}{2} + c \\e^x \cos \large\frac{x}{2} + c \\ e^x \cot \large\frac{x}{2} + c \end{array}$