Mark against the correct answer in each of the following:

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

$\int e^{(5-3 x)} d x=?$

A. $-3 \mathrm{e}^{(5-3 \mathrm{x})}+\mathrm{C}$

B. $\frac{1}{3} e^{(5-3 x)}+C$

C. $\frac{e^{(5-3 x)}}{-3}+C$

D. none of these