Integrate $\int \frac{2 x}{\sqrt{x^{2}+3}} d x$
A) $\frac{1}{2} \sqrt{\mathrm{x}^{2}+3}+\mathrm{C}$ B) $2 \sqrt{x^{2}+3}+C$

Integrate $\int \frac{2 x}{\sqrt{x^{2}+3}} d x$ .

A) $\frac{1}{2} \sqrt{\mathrm{x}^{2}+3}+\mathrm{C}$
B) $2 \sqrt{x^{2}+3}+C$
C) $\sqrt{x^{2}+3}+C$
D) $\frac{4}{3}\left(x^{2}+3\right) ^{3 / 2}+C$