If $f '(x)=\sqrt{x}$ and $f(1)=2$ then $f(x)$ is

Question

$$\begin{array}{1 1}(1)\frac{-2}{3}(x\sqrt{x}+2)&(2)\frac{3}{2}(x\sqrt{x}+2)\\(3)\frac{2}{3}(x(\sqrt{x}+2)&(4)\frac{2}{3}x(\sqrt{x}+2)\end{array}$$