Solve this following


Mark $(\sqrt{)}$ against the correct answer in each of the following:

$\int \frac{(\cos 2 x-\cos 2 \alpha)}{(\cos x-\cos \alpha)} d x=?$

A. $2 \sin x+2 x \cos \alpha+C$

B. $2 \sin x-2 x \cos \alpha+C$

C. $-2 \sin x+2 x \cos \alpha+C$

D. $-2 \sin x-2 x \cos \alpha+C$


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