$\int \large \frac{x -\sin x}{1+ \cos x}$$dx=x \tan \bigg(\large\frac{x}{2}\bigg)$$+p \log \bigg |\sec \bigg(\large\frac{x}{2}\bigg)\bigg |$$+c=>p=$

Question

$$(a)\;-4 \quad (b)\;4 \quad (c)\;2 \quad (d)\;-2$$