Which of the following series is in descending order?

• A. \[\frac{1}{3},\frac{2}{3},\frac{3}{5},\frac{1}{3}\]                     
• B.  \[\frac{2}{3},\frac{3}{5},\frac{3}{8},\frac{1}{3}\]
• C.  \[\frac{1}{3},\frac{3}{8},\frac{3}{5},\frac{2}{3}\]                    
• D. \[\frac{2}{3},\frac{1}{3},\frac{3}{8},\frac{3}{5}\]