Mark against the correct answer in each of the following:

Question:

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

$\int \sin ^{3}(2 x+1) d x=?$

A. $\frac{1}{8} \sin ^{4}(2 x+1)+C$

B. $\frac{1}{2} \cos (2 x+1)+\frac{1}{3} \cos ^{3}(2 x+1)+C$

C. $-\frac{1}{2} \cos (2 x+1)+\frac{1}{6} \cos ^{3}(2 x+1)+C$

D. none of these

Solution:

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