$Let I ={\displaystyle\int^1_0\frac{sin{x}}{\sqrt{x}}dx}$ and $J={\displaystyle\int^1_0\frac{cos{x}}{\sqrt{x}}dx}$. Then which one of the following is true?
( A ) $I>\frac{2}{3}$ and $J>2$
( B ) $I<\frac{2}{3}$ and $J>2$
( C ) $I<\frac{2}{3}$ and $J<2$ <br/> ( D ) $I>\frac{2}{3}$ and $J<2$</span>