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

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

$\int \frac{(x+1) e^{x}}{\cos ^{2}\left(x e^{x}\right)} d x=?$

A. $\tan \left(x e^{x}\right)+C$

B. $-\tan \left(x e^{x}\right)+C$

C. $\cot \left(x e^{x}\right)+C$

D. none of these

Solution:

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