Calculate the area under the curve $y=2\sqrt x$ included between the lines $x=0$ and $x=1$.

Question

$\begin{array}{1 1} \frac{4}{3}\;sq.units \\ \frac{2}{3}\;sq.units \\ \frac{1}{3}\;sq.units \\ None\;of\;the\;above \end{array} $