The fractionfrac{1}{2},frac{2}{5} and frac{2}{3} are arranged in order from the largest to the smallest. Which one of the following is the correct order?A.frac{2}{3},frac{2}{5},frac{1}{2}B.frac{1}{2},frac{2}{3},frac{2}{5}C.frac{2}{5},frac{2}{3},frac{1}{2}D.frac{2}{3},frac{1}{2},frac{2}{5}