Mark against the correct answer in each of the following:
Question:

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

$\int \sqrt{1-\cos x} d x=?$

A. $-\sqrt{2} \cos \frac{x}{2}+C$

B. $-2 \sqrt{2} \cos \frac{x}{2}+C$

C. $\frac{-1}{2} \cos \frac{x}{2}+C$

D. $\frac{-1}{\sqrt{2}} \cos \frac{x}{2}+C$

Solution:

where $\mathrm{c}$ is the integrating constant.

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